MATHEMATICS HIGH SCHOOL

P=-4a^2-2ab+9b^2
Q=-7a^2-3ab+5b^2
P-Q

Answers

Answer 1
Answer:

Answer:

3a² + ab + 4b²

Step-by-step explanation:

Combine like terms. Like terms have same variable with same power.

P - Q = -4a² - 2ab + 9b² - (-7a² - 3ab + 5b²)

To open the brackets, multiply each term of Q by (-1)

          = -4a² - 2ab + 9b² + 7a²+ 3ab - 5b²

-4a² and 7a² are like terms.

(-2ab) and  3ab  are like terms.

9b² and (-5b²) are like terms.

          = -4a² + 7a² -2ab + 3ab + 9b²- 5b²

          = 3a² + ab + 4b²
Answer 2
Answer:

Answer:

3a² + ab + 4b²

Step-by-step explanation:

P - Q

= - 4a² - 2ab + 9b² - (- 7a² - 3ab + 5b² ) ← distribute parenthesis by - 1

= - 4a² - 2ab + 9b² + 7a² + 3ab - 5b² ← collect like terms

= 3a² + ab + 4b²

Related Questions

Area of a Trapezoid = 791 square cm. Base 1 = 26.5cm, Base 2 = 30cm. What is the height?
Find the equation lines(4, 5)(7, 3)
100 percent of blank = 60 Solve for blank. ​
The function y=-16x^2+36 represents the height y (in feet) of an apple x seconds after falling from a tree. Find and interpret the x - and y -intercepts.
The area of the trapezoid is 108 in2.What is the height of the trapezoid?

What is 3 and the square root of 27?

Answers

3√27

= 9√3


I hope that's help and sorry for the late answer ^..^

Add 17,346 + 92,601

Answers

Answer:

109,947

Hope this helps!

Answer:

using basic addition.. 17,346 + 92,601 = 109947

Which mode of persuasion does President Roosevelt use to appeal to his audience? ethos, an appeal based on the speaker’s credibility pathos, an appeal to the audience’s emotions logos, an appeal to the audience’s sense of logic an appeal based on emotion, logic, and the speaker’s credibility

Answers

Answer:

A.

Step-by-step explanation:

Edge 2021

If you expand and simplify (2x+3)(x+4)

Answers

Answer:

The answer is 2x² + 11x + 12.

Step-by-step explanation:

You have apply Distributive Law,

a(m + n) = am + an

So for this question :

(2x + 3)(x + 4)

= 2x(x) + 2x(4) + 3(x) + 3(4)

= 2 {x}^(2) + 8x + 3x + 12

= 2 {x}^(2) + 11x + 12

(2x + 3)(x + 4) \n = 2x(x + 4) + 3(x + 4) \n = 2x * x + 2x * 4 + 3 * x + 3 * 4 \n = {2x}^(2) + 8x + 3x + 12 \n = {2x}^(2) + 11x + 12 \n hope \: it \: helps

How do I answer 16 in scientific notation? Please help!

Answers

Move the decimal place over 9 places to the right for the numerator

9,900,000,000

Move the decimal place over 8 places to the right for the denominator

150,000,000

Divide both

9,900,000,000 / 150,000,000 = 66

Do you think making a table is the best way to find the total area of the rooms

Answers

Well it depends on how many tables you are using and if all the sides of the table are equal lengths....you can it will not hurt anything just make sure you right down all of the area length/width that you cover that way you get the amount you need :) remember to hit that thanks button please:)
Other Questions
Fine the equation of the line
67m7cm=cm. Find the equivalent measures
Find the value of xy z​
Mrs. Moore's class is conducting an experiment to find the probability of pulling certain colors from a bag of 25 marbles. If 8 are purple, 3 are yellow, 6 are green, and the rest are black, what is the probability of drawing 2 black if the marbles are not replaced after they are picked? Show answer as a percent rounded to nearest hundredth, if necessary.A. 8.96% B. 10.24% C. 9.33%