Question

(3+5)^2–30xy = 9^2+ 25y^2

Answer 1

Answer:

(3x+5y)

2

−30xy

=9x

2

+25y

2

+30xy−30xy

=9x

2

+25y

2

verified.

Answer 2

Answer:

answer is shown in explanation

Step-by-step explanation:

(3x+5y)² -30xy = 9x² + 25y²

1. (3x+5y)² = 9x²+30xy+25y² [by formula (a+b)²=a²+2ab+b²]
2. so, (3x+5y)² -30xy = 9x²+30xy+25y²-30xy

= 9x²+25y²

hence,

proved.

have a nice day