factorise (2x-3)²-8x+12
class 9 maths
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Answer:
=(2x-7)(2x-3)
Step-by-step explanation:
(2x-3)²= 4x²-12x+9
=(2x-3)²-8x+12
=4x²-12x+9 -8x+12
=4x²-20x+21
=4x²-(14+6)x+21
=4x²-14x-6x+21
=2x(2x-7)-3(2x-7)
=(2x-7)(2x-3) ans:
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