Question

(3 - 13x - 7x2) - (5x2 + 12x - 10)

Answer 1

[ Answer ]

`\boxed{-49x\ +\ 13}`

[ Explanation ]

• Simplify: (3 - 13x - 7 · 2) - (5 · 2 + 12x - 10)

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• Remove Parenthesis

3 - 13x - 7x · 2 - (5 · 2 + 12x - 10)

7x · 2 = 14x

-(5x · 2 + 12x - 10) = -(22x - 10)

3 - 13x - 14x - (22x - 10)

-(22x - 10): -22x + 10

3 - 13x - 14x - 22x + 10: -49x + 13

`\boxed{[ \ Eclipsed \ ]}`

• Simplify

-49x + 13

Answer 2

-12x2 − 25x + 13

Explanation:

(3 -13x -7x2)-(5x2 +12x -10) multiply the entire second term by negative one

3 - 13x -7x^2 -5x^2 -12x +10 combine like terms