Question

If one of the zeros quadratic polynomial x square plus 3x plus b is 2 then the value of b is
​

Answer 1

Answer:

Let p(x)=x²+3x+b

Given,

p(2)=0

${(2)}^{2} + 3(2) + b = 0 \\ 4 + 6 + b = 0 \\ 10 + b = 0 \\ b = - 10$