Math, asked by rohana27, 9 months ago

(5m - 7) ² = _______

Answers

Answered by abdulrubfaheemi

1

Answer:

(5m)²-2×5m×7+(7)²

25m²-70m+49

Answered by iTunes

31

Question :

(5m-7)²

Formula:

(a-b)²= a²+b²-2ab

Solution:

(5m-7)²

= (5m)²+(7)²-2(5m)(7)

= 25m²+49-70m

More to know

(a+b)²= a²+b²+2ab
(a²-b²)= (a-b)(a+b)

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