Question

show that 1/2 is a zero of the polynomial 2x^2 + 7x-4​

Answer 1

Answer:

p(x)=2x^2+7x-4

p(1/2)=2(1/2)^2+7(1/2)-4

p(1/2)=2/4+7/2-4

p(1/2)=2/4+7/2-4/1

p(1/2)=1+7-8/2

p(1/2)=8-8/2

p(1/2)=0/2

p(1/2)=0

hence proved

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Answer 2

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