Question

plz ans these ques and plz give the ans in explanation.......​

Answer 1

Answer:

• a.(x-y)²=(5-(-2))²=(5+2)²=(7)²=49
• b.49+4×5×-2=49-40=9

Answer 2

Answer:

(i) 49 (ii) 89

Step-by-step explanation:

(i) x² + y² - 2xy

value of x = 5

value of y = -2

then, equation is like this

5² + (-2²) -2 × 5 × (-2)

25 + 4 - 2 × (-10)

25 + 4 +20

29 + 20

49

(ii) ( x - y )² + 4xy

value of x = 5

value of y = -2

then equationis like this

[5 - ( -2 ) ] ² + 4 × 5 × ( -2 )

[ 5 + 2 ] ² + 20 × ( -2 )

[ 7 ] ² + 40

49 + 40

89