Question

help me
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Answer 1

Given:

• 5x–2y = 7
• xy = 2

To Find:

• (5x+2y)²

Solution:

(5x+2y)² = (5x–2y)²+ 4×5x×2y

= 7²+ 40×2

= 49 + 80 = 129

Formula Used:

• (a+b)² = (a–b)²+4ab

Answer 2

answer:

rewrite (5x+2y)^2

(5x+2y)

(5x+2y)

(5x+2y)

(5x+2y)

5x(5x)+5x(2y)+2y(5x)+2y(2y)

25x^2+20xy+4y^2