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CARDOSABALOTA14IN
Answered

evaluate using direct substitution
1.) P(x)=-5x⁴+7x²+x+9 ; P(4)
2.)P(x)=10x³-5x²+2x+4 ; x-20​

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ANONYMOUSX12IN

Answer:

1. P(x) = -5x⁴ + 7x² + x + 9 ; P(4)

P(4) = -5(4)⁴ + 7(4)² + (4) + 9

= -1280 + 112 + 4 + 9

= -1155

2. P(x) = 10x³ - 5x² + 2x + 4 ; x - 20

P(20) = 10(20)³ - 5(20)² + 2(20) + 4

= 80000 - 2000 + 40 + 4

= 78044

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