4x^2 - 12x + 9 split the middle term
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0
4x^2-12x+9
= 4x^2-6x-6x+9 (4*9=36,6+6=12,6*6=36)
=2x(2x-3)-3(2x-3)
=(2x-3)(2x-3)
Answered by
6
Multiply the two outer coefficients, 4.9=36
Find two numbers,that when multiplied equal 36 and when added equal 12.
6+6=12
6.6=36
Step-by-step:
4x^2 -12x + 9
=4x^2-(6+6)x+9
=4x^2-6x-6x+9
=2x(2x-3)-3(2x-3)
=(2x-3) (2x-3)
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