Question

Multiply. (5x – 2)² a. 25x² – 20x + 4 b. 25x² – 4 c. 25x2² – 10x + 4 d. 25x² + 20x + 4

Answer 1

Answer:a

Explanation:

Answer 2

Answer: A.) 25x² - 20x + 4

Explanation:

(5x – 2)² is basically saying (5x-2)(5x-2), so use the FOIL method to multiply the binomials:
First(F): 5x(5x) = 25x²
Outer(O): 5x(-2)= -10x
Inside(I): -2(5x)= -10x
Last(L): -2(-2)=4

Now, just combine like terms:
25x²-10x-10x+4

25x²-20x+4

So your answer would be A.