Question

Hello I have a homework to do in math, could you help me please. The instructions are here: Expand and reduce

J=25x²-9+(5x-3)(7x+8)
K=9-48x+64x²-(6+2x)(3-8x)
L=100x²-25-(20x+10)(2x-4)
M=(2x-3)(4x+2)+(4x-2)(7x-8)

Answer 1

I hope to see you helped, please crown :)

Explanation:

Here are the expanded and reduced forms of each expression:

J = 25x² - 9 + (5x-3)(7x+8)

J = 25x² - 9 + 35x² + 19x - 24

J = 60x² + 19x - 33

K = 9 - 48x + 64x² - (6+2x)(3-8x)

K = 9 - 48x + 64x² - 18 + 48x + 6x - 16x²

K = 48x² - 10

L = 100x² - 25 - (20x+10)(2x-4)

L = 100x² - 25 - 40x² + 100x + 80x - 200

L = 60x² + 180x - 225

M = (2x-3)(4x+2) + (4x-2)(7x-8)

M = 8x² - 6x + 14x² - 34x - 8x + 16

M = 22x² - 48x + 16

Answer 2

I hope to see you helped, please crown :)

Explanation:

Here are the expanded and reduced forms of each expression:

J = 25x² - 9 + (5x-3)(7x+8)

J = 25x² - 9 + 35x² + 19x - 24

J = 60x² + 19x - 33

K = 9 - 48x + 64x² - (6+2x)(3-8x)

K = 9 - 48x + 64x² - 18 + 48x + 6x - 16x²

K = 48x² - 10

L = 100x² - 25 - (20x+10)(2x-4)

L = 100x² - 25 - 40x² + 100x + 80x - 200

L = 60x² + 180x - 225

M = (2x-3)(4x+2) + (4x-2)(7x-8)

M = 8x² - 6x + 14x² - 34x - 8x + 16

M = 22x² - 48x + 16