Find the value of the following expressions for x=-2:
(b) 4x - 3x3
(d) 4x3 +6x2 + 4
(e) 9x - 7x2+2
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Answer:
x=-2
B)4x-3x³=4(-2)-3(-2)³=-8+24=16
D)4x³+6x²+4=4(-2)³+6(-2)²+4
=-4(8)+6×4+4=-32+24+4=-32+28=-4
E)9x-7x²+2=9(-2)-7(4)+2=-18-28+2
=-46+2=-44
Step-by-step explanation:
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