Question

e) 5x^2 + x = 0
f) x^2 - 6x = 0
g) -2x^2 + 5x = 0
h) 3x^2 - 18x = 0

Answer 1

e
5x² + x = 0
x ( 5x + 1) = 0
x = 0 ***
5x + 1 = 0
5x = -1
x = -1/5 ***
f
x² - 6x = 0
x( x - 6) = 0
x = 0 ***
x - 6 = 0
x = 6 ****
g
-2x² + 5x
2x² - 5x = 0
x ( 2x - 5) = 0
x =0 ***
2x - 5 = 0
2x = 5
x = 5/2 ***
h
3x² - 18x = 0
x² - 6x = 0
x( x - 6 ) = 0
x = 0 ****
x - 6 = 0
x = 6 ***