4. Factorize :
(1) 2x2 + 2ax -5x -5a
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Answer:
Step-by-step explanation:
2x2 + ax - a2 = 0
⇒ 2x2 + 2ax - ax - a2 = 0
⇒ 2x(x + a) - a(x + a) = 0
⇒(2x - a)(x + a) = 0
∴x = a /2 or - a.
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