Question

(x+a) (x+b)= x² + (a+b)x + ab ,find the value of each of the following : 46×48​

Answer 1

Answer:

46×48

(40+6)(40+8) = 40²+(6+8)40+6×8

=1600+56+48

=1704

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Answer 2

$46 \times 48 = (40 + 6) \times (40 + 8) \\ = {40}^{2} + (6 + 8) \times 40 + (6 \times 8) \\ = 1600 + 14 \times 40 + 48 \\ = 1600 + 560 + 48 \\ = 2208 \\ and \: also \: whn \: we \: multiply \: 46 \: and \: 48 \\ \: directly \: it \: gives \: the \: result \: 2208 \\ (46 \times 48) = 2208 \\ so \: the \: identity \: is \: right \:$

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