-2ab
Assuming that non-leading numbers are exponents, the expression becomes12a^2b + 8a - 5a^2b + 2ab - 4ab^2 + 6ab - 2a - 3ab= 7a^2b + 6a + 5ab - 4ab^2= a*(7ab + 6 + 5b - 4b^2)
3ab + 3ac + 2b2 + 2bc = 3a(b + c) + 2b(b + c) = (3a + 2b)(b + c)
(3b - 1)(a - b)
2a-3ab = -1
-5ab + 7ab -9ab + ab -2ab ... Let's simplify that a bit:ab(-5+7-9+1-2) = -8ab
-2ab
To simplify the expression 12ab + 9ab - 7ab, you first combine like terms. The coefficients of the like terms are added or subtracted, while the variables remain the same. In this case, you add the coefficients of the like terms: 12 + 9 - 7 = 14. So, the simplified expression is 14ab.
21a2b2 square cm
Assuming that non-leading numbers are exponents, the expression becomes12a^2b + 8a - 5a^2b + 2ab - 4ab^2 + 6ab - 2a - 3ab= 7a^2b + 6a + 5ab - 4ab^2= a*(7ab + 6 + 5b - 4b^2)
12ab+3ab=15ab
That would depend on the plus or minus value of 9ab which has not been given
Two negatives make a positive so your equation simplifies firstly as 4ab + 3ab and finally as 7ab.
(2a + b)(a + 3b)
3ab + 3ac + 2b2 + 2bc = 3a(b + c) + 2b(b + c) = (3a + 2b)(b + c)
(a+b)(3b+1)
Provided multiplication is commutative, it is 8ab.