Question

Find weather x=-2 is the solution of the linear equation 3+2x=-1

Answer 1

f(x)=3+2x=-1

f(-2)=3+2(-2)=-1

3+2(-2)+1=0

3-4+1=0

-1+1=0

0=0

therefore,-2 is a factor of f(x)=3+2x= -1.

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