Question

(3a + 5) (3b + 2) - 3 (ab + 5b)
solve

Answer 1

Answer:

1. 15b2

Step-by-step explanation:

Answer 2

Answer:

(3a+5)(3b+2)-3(ab+5b)

when we don't have signs between brackets we multiply the numbers and variable so

(3a+5)×(3b+2)-3×(ab+5b)

first of all I will separate them so it will be easy

(3a+5)×(3b+2)

3a×3b +3a×2 +5×3b +5×2

9ab+6a+15b+10

no one can be add

-3(ab+5b)

-3×ab + -3×5b

-3ab-15b

Step-by-step explanation:

9ab+6a+15b+10-3ab-15b

9ab-3ab+6a+15b-15b

9ab and -3ab have same variable so they can subtract

9ab-3ab

=6ab

we didn't mention minus here because 9 is greater than 3 and 9 have plus sign

now we don't have same variable of 6a so it will be written as it is

15b-15b

=0

so the answer will be

6ab+6a