What is the difference of the two polynomials?(7y2 + 6xy) – (–2xy + 3)
A7y2 + 4xy – 3
B7y2 + 8xy – 3
C7y2 + 4xy + 3
D7y2 + 8xy + 3

Answers

Answer 1

Answer: (7y² + 6xy) - (-2xy + 3)

⇒ (-1 * -2xy) + (-1 * 3) = 2xy - 3

7y² + 6xy + 2xy - 3

7y² + 8xy - 3 Choice B.

Answer 2

Answer:

B. 7y2 + 8xy – 3 is the answer

What are the solutions to the quadratic equation 4x^2 = 64? A. x = −16 and x = 16
B. x = −8 and x = 8
C. x = −4 and x = 4
D. x = −2 and x = 2

Answer:

Step-by-step explanation:

Given

4x² = 64 ( divide both sides by 4 )

x² = 16 ( take the square root of both sides )

x = ± $√(16)$ = ± 4

Solutions are x = - 4 and x = 4 → C

Express 4-3i/(1+i)(2-3i) in the a+bi form