Question

If 2 is a zero of the polynomial p (X)=2xsq-3x+7a,then find the value of a

Answer 1

Step-by-step explanation:

btp

p(x) = 0

=> 2x^2 +3x + 7a = 0

=> 8 +6 + 7a = 0 ( since 2 is a zero of the polynomial,)

=> 14 = -7a

=> a = -2

Answer 2

Question should be:

• If 2 is a zero of the polynomial p (X)=2x²-3x+7a,then find the value of a.

ANSWER:

• Value of a is -2/7

GIVEN:

• 2 is the Zero of the polynomial P(x) = 2x²-3x+7a

TO FIND:

• Value of a.

SOLUTION:

=> P(x) = 2x²-3x+7a

Here 2 is the zero of the polynomial P(x) . So if we put x = 2 in P(x) then we will get the remainder = 0

=> P(2) = 2(2)²-3(2)+7a

=> 8-6+7a = 0

=> 2+7a = 0

=> 7a = -2

=> a = -2/7

Value of a is -2/7

NOTE:

• This type of questions can be solved by putting the value of zero in place of the variable.
• Then simply it and get the value of the variable.