Question

If 2 is a zero of both the polynomial, 3x ² + ax – 14 and 2x – b then a – 2b is equal to

–2

7

–8

–7

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Answer 1

Step-by-step explanation:

Given, 2 is a zero of the polynomial 3x² + ax – 14

=> 3 (2)² + a(2) - 14 = 0

=> 12 + 2a - 14 = 0 => 2a = 2 => a = 1

Given, 2 is a zero of the polynomial 2x – b

=> 2 (2) - b = 0

=> 4 - b = 0 => b = 4

=> a – 2b = 1 - 2(4) = 1 - 8

.•. a – 2b = -7

Answer 2

Answer:

-7 is the ans...

Step-by-step explanation:

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