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3 years ago

Factorise 400x^2-49y^2

Mathematics

2 answers:

sattari [20]3 years ago

6 0

Answer:

(20x - 7y)(20x + 7y).

Step-by-step explanation:

This is the difference of 2 squares;

a^2 - b^2 = (a - b)(a + b). So:

400x^2-49y^2

= (20x - 7y)(20x + 7y).

bazaltina [42]3 years ago

3 0

Answer:

(20x + 7y) (20x - 7y)

Step-by-step explanation:

400x²-49y² = (20x + 7y) (20x - 7y)

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