Question

Please help. Will give 15 points, thanks and brainliest Expand and simplify (2x + 5)(2x – 5)(3x + 7)

Answer 1

Answer:

$12x^3+28x^2-75x-175$

Step-by-step explanation:

$(2x + 5)(2x - 5)(3x + 7)$

$[2x(2x)+2x(-5)+5(2x)+5(-5)](3x+7)$

$[4x^2+-10x+10x+-25](3x+7)$

$[4x^2+0+-25](3x+7)$

$(4x^2-25)(3x+7)$

$4x^2(3x)+4x^2(7)-25(3x)-25(7)$

$12x^3+28x^2-75x-175$