Question

4. Which of the following equations has roots – 2 and 7? a) x 2+5x-14=0 b) x 2 -5x-14=0 c) x 2+5x+14=0 d) x 2 -5x+14=0​

Answer 1

Answer:

option b

Step-by-step explanation:

If roots are -2 and 7, then their sum is -2+7=5 and their product is -2*7=-14

any quadratic equation = x²-(a+b)x+ab=0 ; a,b are roots

x²-(5)x+(-4) = 0

x²-5x-14=0