Question

49 (x-y)square -9 (2x+y)square

Answer 1

Answer:

sorry i donot know answer sorry please

Answer 2

Answer:

13x²-134xy+40y²

Step-by-step explanation:

We know the identity (a-b) ²=a²-2ab+b² and (a+b)²=a²+2ab+b²

so,

49(x²-2xy+y²)-9(2x²+2X2xXy+y²)

( 49x²-98xy+49y²)-(36x²+36xy+9y²)

49x²-98xy+49y²-36x²-36xy-9y²

13x²-134xy+40y²