factorise 3xsquare_12x
Answers
Answered by
1
Hi
here is my answer
3x² - 12x
= 3x ( x - 4 )
so
if we want to find value of x then
3x ( x - 4 ) = 0
=> x - 4 = 0
=> x = 4
=====================================
here is my answer
3x² - 12x
= 3x ( x - 4 )
so
if we want to find value of x then
3x ( x - 4 ) = 0
=> x - 4 = 0
=> x = 4
=====================================
yjjjeeaxbn:
my question is to do by taking common factor and then using identities please do
Answered by
0
Hi friend!!
» 3x² - 12
» 3(x²-4)
» 3(x²-2²)
» 3(x-2)(x+2) {a²-b² = (a+b)(a-b)}
The factors of 3x²-12x are 3,x-2 and x+2
If it is 3x²-12x, follow the process
» 3x(x-4)
Then the factors are 3x and x-4
» 3x² - 12
» 3(x²-4)
» 3(x²-2²)
» 3(x-2)(x+2) {a²-b² = (a+b)(a-b)}
The factors of 3x²-12x are 3,x-2 and x+2
If it is 3x²-12x, follow the process
» 3x(x-4)
Then the factors are 3x and x-4
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