Question

HELP WITH THIS QUESTION ASAP!!

Answer 1

Answer:

$7a^{2} +20$

Step-by-step explanation:

Given: Area of one cupboard= $3a^{2} -5y+15$

          Area of second cupboard= $4a^{2} +5y+5$

As per question, carpenter need to determine the amount of plywood required for two cupboard.

Lets, add the area of two cupboard to know the amount of plywood required.

∴ $3a^{2} -5y+15$-  Area of first cupboard.

  $4a^{2} +5y+5$-   Area of second cupboard.

Adding both the area;

$(3a^{2} -5y+15)+(4a^{2} +5y+5)$

Now, opening the parenthesis

$3a^{2} -5y+15+4a^{2} +5y+5$

we will get $7a^{2} +20$.

∴ Total area of cupboard= $7a^{2} +20$