smielygirl17 smielygirl17

24-10-2016
Mathematics

contestada

Simplify (6x2 − 3 − 5x3) − (4x3 + 2x2 − 8).

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Laura0987 Laura0987

24-10-2016

(6•2 - 3 - 5•3) - (4•3 + 2•2 - 8)
(12 - 3 - 15) - (12 + 4 - 8)
(9 - 15) - (16 - 8)
(-6) - (8)
-14

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apologiabiology apologiabiology

24-10-2016

distribute invisibl -1 to he 4x³+2x²-8

we get
6x²-3-5x³-4x³-2x²+8
group like terms
-5x³-4x³+6x²-2x²-3+8
add them
-9x³+4x²+5

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