Question

The zero of tge polynomial f (x)2x+7 is

Answer 1

Answer:

10th

Maths

Polynomials

Relationship between Zeroes and Coefficients of a Polynomial

If 2 is a zero of the polyn...

MATHS

If 2 is a zero of the polynomial p(x)=2x

2

−3x+7a, find the value of a

EASY

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ANSWER

Given polynomial p(x)=2x

2

−3x+7a is zero polynomial if x is 2

Replace x by 2 we get

∴2(2)

2

−3(2)+7a=0

⇒2×4−3×2+7a=0

⇒8−6+7a=0

⇒2+7a=0

Add -2 both sides we get

2+7a−2=0−2

⇒7a=−2

Divided by 7 both side we get

a=−

7

2

So a=−

7

2

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