Maths
This question was asked in Ex 2.5,2
if quetion no.1 part 3 we do like this is this format wrong 

(3x 4) (3x5)
(x a) (x b) x2 (a b)x(a×b)
3x2 (4)(-5)3x(4)(-5)
9x2 (-9)-20
-9x2=3x-20 answer 
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Anita Gupta
Aug. 21, 2020, 12:35 a.m.

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