3. Factorise the given expressions :
g. 4x² - y² + 3y – 6x
j. 9(a + b)3 – 25(a + b)
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Step-by-step explanation:
4x2-y2+3y-6x
=(2x)2-y2+3y-6x
=(2x+y)(2x-y)-(6x-3y)
=(2x+y)(2x-y)-3(2x-y)
=(2x-y)(2x+y-3)
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