Subtract −7a2+3a−9−7a 2 +3a−9minus, 7, a, squared, plus, 3, a, minus, 9 from 5a2−6a−45a 2−6a−45, a, squared, minus, 6, a, minus, 4.

After subtracting from , the answer is:

Step-by-step explanation:

The given expressions are:

Expression 1:

Expression 2:

According to the question, expression 1 has to be subtracted from expression 2.

Writing it mathematically,

The minus between both expression, when solved, will change the signs of the terms in expression 1

So,

Combining alike terms(i.e. combining squared terms together and similarly linear and constant terms)

After subtracting from , the answer is: