7x(5x+3)-(25x^2+10x-7)

asked Jul 4, 2021 127k views

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Answer:

10x^2+11x+7

Explanation:

Given the expression:

7x(5x+3)-(25x^2+10x-7)

Use distributive property:

$7x(5x+3)=7x\cdot 5x+7x\cdot 3=35x^2+21x\\ \\7x(5x+3)-(25x^2+10x-7)=35x^2+21x-(25x^2+10x-7)$

Open brackets:

35x^2+21x-(25x^2+10x-7)=35x^2+21x-25x^2-10x+7

Combine the like terms:

35x^2+21x-25x^2-10x+7=(35x^2-25x^2)+(21x-10x)+7=10x^2+11x+7

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