Question

Solve 4x2 = 20x.
Answer

x = 4, x = 5

x = 4, x = -5

x = 0, x = 5

x = 0, x = -5

Answer 1

correct.. is... 4x^2 = 20x

Answer 2

5

Answer 3

cancel off x
4x=20
x=5

Answer 4

also not expression holds for x=0 too

Answer 5

so x=5,x=0

Answer 6

x = 0, x = 5

Answer 7

4x^2 = 20x


4x^2 - 20x = 0


4x(x-5) = 0


4x = 0 or x-5 = 0


x = 0 or x = 5

Answer 8

note that @jim_thompson5910 used the systematic method for doing sch qns , what i did is also right bt before cancelling the x on both sides i looked at the condition when x=0

Answer 9

ok thanks guys shows me two diffrent ways to do it..

Answer 10

it is adviced u clearly understand our wrking