Question

verify,wether x=-m÷l is zero of the polynomial F(x)=lx+m

Answer 1

For x=-m÷l to be the zero of polynomial f(x), f(-m÷l) should be equal to 0.
Hence, f(-m÷l)=(l×-m÷l)+m=-m+m=0.
Thus x=-m÷l is a zero of f(x).

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