Question

X2 + 9x+20 this only question

Answer 1

Answer:

x = -5 and x = -4

Step-by-step explanation:

Given equation is -

$x^{2} + 9x + 20 = 0$

Solving by fractional method

$x^{2}+ 5x + 4x + 20 = 0$

x ( x + 5 ) + 4 ( x + 5 )= 0

( x + 5 ) ( x + 4 ) = 0

If ( x + 5 ) = 0

Then x = -5

If ( x + 4 ) = 0

Then x = -4