Question

Are they correct ? If any error correct them.
1) (2a +3)2 = 2a2 + 6a + 9

2) 3x + 5y = 15xy​

Answer 1

Answer:

Both are wrong (Please check typo errors in your expressions)

Step-by-step explanation:

1) I assume that ypu wanted to write $(2a+3)^{2} = (2a)^{2} + 6a + 9$

Using the equation $(a+b)^{2} = a^{2} + 2ab + b^{2}$,

it would be $(2a+3)^{2} = 4a^{2} + 12a + 9$

2) 3x + 5y = 15xy....wrong

3x + 5y cannot be simplified any further and cannot be equated to 15xy

but if the LHS of your statement is  3x * 5y, then it can be simplified to 15xy.