Question

(1*2 + 6*1)(1*2+6*1)

Answer 1

Answer:

(1*2+6*1)(1*2+6*1)

=(2+6)(2+6)

=(8)(8)

=64

Hope it's helpful

Answer 2

Answer:

(1*2+6*1)(1*2+6*1)

[(1×2)+(6×1)][(1×2)+(6×1)]

[2+6][2+6]

1st method

8×8 = 64

2nd Method

[2+6]²

(by (a+b)²=a²+2ab+b²)

(here a=2 and b=6)

so

(2)²+2×2×6+(6)²

= 4 + 24+ 36

= 40+24

= 64

Hope it will help

thx