Question

answer these answers pls I am in trouble​

Answer 1

Given

• x-y=20,
• xy=24

To Find

• x²-y²

Formula used

• (a+b)²=a²+b²+2ab
• (a-b)²=a²+b²-2ab
• a²-b²=(a+b)(a-b)

Solution

x-y=20

xy=24

• (x-y)=20
• (x-y)²=20²
• x²+y²+2xy=400
• x²+y²+2×24=400
• x²+y²+48=400
• x²+y²=400-48
• x²+y²=352

Now

• (x+y)²=x²+y²+2xy
• (x+y)²=352+2×24
• (x+y)²=352+48
• (x+y)²=400
• (x+y)=20

Here

• x²+y²= (x+y)(x-y)
• x²+y²= (20)(20)
• x²+y²= 400

Answer 2

Step-by-step explanation:

•refer to the attachment

hope this helps you