Question

Subtract (3x2 – 2x + 5xy – 7) from (8 – 9xy + 3x2 – 5x)

Answer 1

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$(8 - 9xy + 3x {}^{2} - 5x) - (3x {}^{2} - 2x + 5xy - 7) \\ = 8 - 9xy + 3x {}^{2} - 5x - 3x {}^{2} + 2x - 5xy + 7 \\ = \underline{\underline{15 - 14xy - 3x}}$

Answer 2

Answer:

(8−9xy+3x

2

−5x)−(3x

2

−2x+5xy−7)

=8−9xy+3x

2

−5x−3x

2

+2x−5xy+7

=

15−14xy−3x