13. If V11–1 = a -
= a - b/11, then find the value of a and b.
11+1
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In examples 1 to 4, there are four options given out of which one is correct. ... [using a2 – b2 = ( a – b) (a + b), here a = 11pq + 4q and ... If x – y = 13 and xy = 28, then find x2 + y2. 111.
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