Question

Help With Special Products?

Answer 1

Question 1

Find the product of (2x + 5y)2.

4x2 + 20xy + 25y2

4x2 - 20xy + 25y2

4x2 - 25y2

4x2 + 25y2

Answer 2

We know: \(\Large \color{blue}{(a+b)^2=a^2+2ab+b^2}\)
Thus:
\(\Large (2x+5y)^2=(2x)^2+2\large \times \Large (2x)\large \times \Large (5y)+(5y)^2\\\Large =4x^2+20xy+25y^2\)

Answer 3

Thank You!