InterviewSolution
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InterviewSolution
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Find the products: ((3/4) x – (5/6) y) ((3/4) x + (5/6) y) |
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Answer» Given that ((3/4) x – (5/6) y) ((3/4) x + (5/6) y) But we can write the given expression as ((3/4) x – (5/6) y) ((3/4) x + (5/6) y)= ((3/4) x – (5/6) y)2 But we have (a – b)2=a2-2ab+b2 On applying above identity in the given expression we get, ((3/4) x – (5/6) y)2= ((3/4) x)2-2 ((3/4) x) ((5/6) y) + ((5/6) y)2 ((3/4) x – (5/6) y)2= (9/16) x2– (15/12) x + (25/36)y2 |
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