x squared +4x+3

evaluate the expression for x= -3
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1 Answer

x2+4x+3 becomes (-3)2+4(-3)+3=9-12+3=0, when x=-3.

Also: x2+4x+3=(x+1)(x+3), so when x=-3, x+3=0 so the whole expression is zero.

by Top Rated User (1.2m points)

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