Question

put x=-2 8x²+9x-4-5-8x scam=report​

Answer 1

Answer:

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Step-by-step explanation:

$8x {}^{2} +9x-4-5-8x \\ \\ 8( - 2) {}^{2} + 9( - 2) - 9 - 8( - 2) \\ \\ 8(4) - 18 - 9 + 16 \\ \\ 32 - 18 - 9 + 16 \\ \\ 21$

Answer 2

Step-by-step explanation:

8x²+9x-4-5-8x

=8(-2)²+9(-2)-4-5-8(-2)

=32-18-9+16

=14+7

=21