Question

If 2 is a zero of P(x) = 2x²-3x+ 7a, then find the
Value 'a' .​

Answer 1

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=− 2/7

So a=− 2/7

Answer 2

Step-by-step explanation:

$p{x} = 2 {x}^{2} - 3x + 7a \: \: \: \: \: \: \: \: is \: zero$

polynomial if x is 12

Replace x by 2 we get

$2 \: (2) {}^{2} - 3(2) + 7a = 0$

$2 \times 4 - 3 \times 2 + 7a = 0$

$8 - 6 + 7 = 0$

$2 + 7a = 0$

add -2 both sides we get

$2 + 7a - 2 = 0 - 2$

$7a = - 2$

divided by 7 both side we get

$a = \binom{ - 2}{7}$

so

$a = \binom{ - 2}{7}$

I hope this is helpful for you