Question

solve the questions no 14. b​

Answer 1

Answer:

1. 21
2. 1

Explaination

Answer 1 =

= 3 × (-2) {2 × (-2) - 7} - 3{(-2) - 4}- 63

= -6 (-4 - 7) - 3 (- 2 - 4) - 63

= -6 × (-11) - 3 × (-6) - 63

= 66 + 18 - 63

= 21 ans.

Answer 2 =

= -(1)² {( -2)² - (-1)² - (2)² {1² - (-2)²} + (-1)²{(2)²- (1)²} + (-2)²{(1)²- 2)²

= -1 × (4 - 1) - 4 ( 1 - 4) + 1 ( 4 - 1 ) + 4 (1 - 4)

= -1 × 3 - (4 × 3) + 1 × 3 + 4 × -3

= - 3 - ( -12) + 4 - 12

= - 3 + 12 + 4½

= 1 ans.