1.

Which of the following Qudratic polynomial has -3 and 4 as its Zeroes a) x^2-x+12 b) x^2+x+12 c) x^2/2-x/2-6 d) 2x^2+2x-24

Answer»

let \: zeroes \: be \: \alpha \: and \: \beta \\ \alpha = - 3 \: \: \: \: \: \: \beta = 4 \\ \alpha + \beta = - 3 + 4 \\ \alpha + \beta = 1 \\ \alpha . \beta = - 3 \times 4 \\ \alpha . \beta = - 12 \\ p(x) = {x}^{2} - ( \alpha + \beta )x + \alpha . \beta \\ p(x) = {x}^{2} - 1x + ( - 12) \\ p(x) = {x}^{2} - x - 12

HOPE it helps

Plz MARK as BRAINLIST


Discussion

No Comment Found

Related InterviewSolutions