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Use the identity (x+a)(x+b)=x^2+(a+b)x+ab to find the following products: (i) (x+3)(x+7)

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asked Jan 10, 2018 in Mathematics by Golu (37,045 points) ● 19 ● 145 ● 413

Use the identity (x+a)(x+b)=x2+(a+b)x+ab to find the following products:

(i) (x+3)(x+7)
(ii) (4x+5)(4x+1)
(iii) (4x-5)(4x-1)
(iv) (4x+5)(4x-1)
(v) (2x+5y) ( 2x+3y)
(vi) (2a2+9)(2a2+5)
(vii) (xyz-4) (xyz-2)

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answered Jan 10, 2018 by Annu Priya (18,055 points) ● 24 ● 45 ● 82

Solution:

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Simplify: (i) (x^2-5) (x+5) +25 (ii) (a^2+5)(b^2+3)+5
asked Jan 10, 2018 in Mathematics by Golu (37,045 points)

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