Question

Помогите срочно 9m(m-2)-(3m-1) (7а^2-3b)(3b-7b^2)

Answer 1

9m^2-18m-3m+1=9m^2-21m+1=3m(3m-7)+1=(3m-7)(3m+1)

Answer 2

I can help you with your math problem. Here is the detailed solution:

To simplify the expression $$9m(m-2)-(3m-1)+(7a^2-3b)(3b-7b^2)$$, we need to apply the distributive property, the associative property, and the commutative property of addition and multiplication.

First, we distribute the 9m to the terms inside the parentheses:

$$9m(m-2)-(3m-1)+(7a^2-3b)(3b-7b^2) = 9m^2-18m-(3m-1)+(7a^2-3b)(3b-7b^2)$$

Then, we distribute the negative sign to the terms inside the parentheses:

$$9m^2-18m-(3m-1)+(7a^2-3b)(3b-7b^2) = 9m^2-18m-3m+1+(7a^2-3b)(3b-7b^2)$$

Next, we combine the like terms 9m^2, -18m, and -3m:

$$9m^2-18m-3m+1+(7a^2-3b)(3b-7b^2) = 9m^2-21m+1+(7a^2-3b)(3b-7b^2)$$

Now, we distribute the 7a^2 and -3b to the terms inside the parentheses:

$$9m^2-21m+1+(7a^2-3b)(3b-7b^2) = 9m^2-21m+1+21a^2b-49a^2b^2-9b^2+21b^3$$

Finally, we combine the like terms 21a^2b and -49a^2b^2:

$$9m^2-21m+1+21a^2b-49a^2b^2-9b^2+21b^3 = 9m^2-21m+1-28a^2b^2-9b^2+21b^3+21a^2b$$

Therefore, the simplified expression is $$9m^2-21m+1-28a^2b^2-9b^2+21b^3+21a^2b$$.

I hope this helps you with your math problem. Have a nice day!Ответь+подробно.+Помогите+срочно+9m(m-2)-(3m-1)++(7а^2-3b)(3b-7b^2)