Question

Using identities solve these :-
1. (91)²
2. 48×52
3. 397×403

Will mark as brainlist !
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Answer 1

Answer:

Answer:159991

Step-by-step explanation:

a²-b²=(a+b)(a-b)

(400+3)(400-3)

(400)²-(3)²=160000-9

159991

hope it helps you

Answer 2

Answer:

1. (90+1)^2

(90^2) + 2× 90×1 + (1^2)

8100 + 180+ 1

8281

2. (50-2)(50+2)

(50^2) - (2^2)

2500-4

2406

3. (400-3)(400+3)

(400^2) - (3^2)

160000-9

159991