If a*b = a²-b² find (i) 8*20 (II)(-4*6) -7If a*b = a÷b + b÷aevaluate 3*4
David , 7 Years ago
Grade 6
9 grade maths> If a*b = a²-b² find (i) 8*20 (II) (-4*6) ...
1 Answers
Arun
Last Activity: 7 Years ago
in 1st part,
we have to simply put a =8 & b = 20
now 8*20 = 82 –202 = 64 – 200 = – 136
in 2nd part also , we have to put a = 3 & b = 4
now 3 * 4 = (3/4) + (4/3) = (9 + 16) / 12 = 25/12
hope it helps
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