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5. Algebra of Matrices
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Q25 of 307 Page 5

If find x

Given,


⇒


⇒


⇒ [(2x + 4)x + 4(x + 2)-1(2x + 4)] = 0


⇒ 2 + 4x + 4x + 8-2x-4 = 0


⇒ 2 + 6x + 4 = 0


⇒ 2 + 2x + 4x + 4 = 0


⇒ 2x(x + 1) + 4(x + 1) = 0


⇒ (x + 1)(2x + 4) = 0


⇒ x = -1 or x = -2


Hence, x = -1 or x = -2


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Questions · 307
5. Algebra of Matrices
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