⇒ ⇒ ⇒ ⇒ ⇒ Cross MULTIPLY ⇒ -2ab = (2x)(2a + b+ 2x)⇒ ⇒ 0= 4ax + 4x² + 2xb + 2ab⇒ 0= 4x(a + X) + 2b(x + a)⇒ 0= (x + a) (4x + 2b) By Zero Product Rule⇒ x + a = 0 OR 4x + 2b = 0⇒ x= -a OR 4x = -2b⇒ x = -a OR i HOPE this will help you-by ABHAY
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