andreaaaacokcuse17 andreaaaacokcuse17

01-07-2019
Mathematics

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What is the missing term?
(10х — 4х2) - (7х + ?) = 3х – 6х2

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musiclover10045 musiclover10045

01-07-2019

(10х — 4х2) - (7х + ?) = 3х – 6х2

10x - 7x = 3x which is given,

Now you have -4x^2 - ? needs to equal -6x^2

write it as an equation:

-4x^2 - ? = -6x^2

To solve for ? add 4x^2 to each side:

-? = -2x^2

Multiply each side by -1:

? = 2x^2

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