Question

solve by formula method 2x^2+13x+15=0​

Answer 1

2x^2 + 13x +15 = 0

a = 2 , b = 13 , c = 15

D = -b^2 + 4ac

D = -(13)^2 + 4×2×15

D = -169 + 120

D = 49

x ={ -b ± (√D)}/2a

x = {-13 ± (√49)}/2(2)

x = {-13 + 7 } / 4 x = {-13 - 7 } / 4

× = -6/4 , -20/4

x = -3/2 , -5

Thank You

This formula mostly use in 11th class also.

Answer 2

Step-by-step explanation:

hope it will help you. ❤ ☺☺❤.