Question

If 4 & - 5 are the roots, then quadratic equation will be

A. x2 – x – 20 = 0

B. x2 – x + 20 = 0

C. x2 + x – 20 = 0

D. x2 + x + 20 = 0​

Answer 1

Answer:

B) x²- x + 20

Step-by-step explanation:

x² - (sum of roots)x + Product of roots

Answer 2

Answer:

c

Step-by-step explanation:

sum 4-5= -1

product 4*-5=-20

formula

X2 -SX +P