Free points and brainliest if you answer these questions. With the CORRECT answer.

IF WRONG I WILL REPORT

Step-by-step explanation:

(x-5)(x^2-2x-6)

x(x^2-2x-6)-5(x^2-2x-6)

x^3-2x^2-6x-5x^2+10x+30

Collect like terms

x^3-7x^2+4x+30

The second option is correct

2. (4a+5)^2=16a^2+Ba+25

Simplifying

(4a+5)^2=16a^2+Ba+25

(4a+5)(4a+5)=16a^2+Ba+25

4a(4a+5)+5(4a+5)=16a^2+Ba+25

16a^2+20a+20a+25=16a^2+Ba+25

16a^2+40a+25=16a^2+Ba+25

Comparing coefficient if a

Then 40a=Ba

Then B=40.

3. -5x^4(-3x^2+4x-2)

Simplifying and putting in mind that

-×-=+

-×+=-

Then, a^m×a^n=a^(a+b). Indices

15x^(4+2)-20x^(4+1)+10x^4

15x^6-20x^5+10x^4

The first option is the correct option.

4. 6xy^3z.3x^2yx^2

Using indices

a^m×a^n=a^(a+b)

(6×3)x^(1+2+2)y^(3+1)z

(18)x^(5)y^(4)z

18x^5y^4z

The second option is the correct option

h it says free pointas

Step-by-step explanation:

triangle and cube

step-by-step explanation: