Question

Subtract the sum of 3l - 4m - 7n2 and 2l + 3m - 4n2 from the sum of 9l+ 2m3 and -3l+
m + 4n2​

Answer 1

Answer:

l+2m+2m3+15n2 is the Answer

Step-by-step explanation:

(3l - 4m - 7n2)+(2l + 3m -4n2) =5l-m-11n2.....(1)

(9l+ 2m3)+(-3l+m+4n2) =6l+m+2m3+4n2..... (2)

(2)-(1)

(6l+m+2m3+4n2)-(5l-m-11n2)

= l+2m+2m3+15n2