Question

1. If one of the zeroes of the quadratic polynomial x2 + 3x + k is 2, then the value of k is (a) 10 (b) −10 (c) −7 (d) −2

Answer 1

Answer:

B.-10 is the correct answer.

Answer 2

$\red{Answer}$

if x=2 is a zero of polynomial then at 2 the value of polynomial must be zero .

substitute x=2 and value of polynomial as zero we get,

(2)²+3(2)+k=0

4+6+k=0

$\orange{k=-10}$

Answer: option (B)

hope it helps

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