QB8. Evaluate 7x^3 - 5x^2+7 when x=-3, 0 and 4

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Guest Oct 16, 2014

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Best Answer

When x = -3: 7·(-3)^3 - 5·(-3)^2 + 7 = 7·(-27) - 5·(9) + 7 = -189 - 45 + 7 = -227

Do the other two in a similar fashion.

geno3141 Oct 16, 2014

geno3141 · Answer 1 · 2014-10-16T03:07:27

When x = -3: 7·(-3)^3 - 5·(-3)^2 + 7 = 7·(-27) - 5·(9) + 7 = -189 - 45 + 7 = -227

Do the other two in a similar fashion.