Question

factorise. 49x^2 - 70xy + 25y^2​

Answer 1

Answer:

(7x-5y)×(7x-5y)

Step-by-step explanation:

• 49x²-70xy + 25y²
• (7x×7x)-(2×7x×5y)+(5y×5y)
• (7x)²-(2×7x×5y)+(5y)²
• (7x-5y)²

(7x)²-(2×7x×5y)+(5y)² = (7x-5y)²

it is done by

a²-2ab+b² = (a-b)²

so the answer is

(7x-5y)(7x-5y)

hope it helps.