Question

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Answer 1

Solution:

$p=-2(Given)$

$(i)4p+7=4×(-2)+7=-8+7=-1$

$(ii)-3p²+4p+7=-3(-2)²+4×(-2)+7=-3×4-8+7=-12-1=-13$

$(iii)-2p³-3p²+4p+7=-2(-2)³-3(-2)²+4(-2)+7=2×-8-3×4-8+7=-16-12-1=-28-1=-29$