Factor completely 3ab − 5ax + 9b − 15x.
(3b + 5x)(a + 3)
(3b − 5x)(a + 3)
(3b − 5x)(a − 3)
prime
question 2(multiple choice worth 1 points)
(08.02)
factor completely 5x(x + 3) + 6(x + 3).
(x + 3)(30x)
(x + 3)(5x + 6)
(x + 3)(11x)
prime
question 3(multiple choice worth 1 points)
(08.02)
factor completely 2cb + 7cx + 2b + 7x.
(2b − 7x)(c − 1)
(2b + 7x)(c + 1)
(2b − 7x)(c + 1)
prime
question 4(multiple choice worth 2 points)
(08.02)
factor completely 21x3 + 35x2 + 9x + 15.
(3x − 5)(7x2 − 3)
(3x − 5)(7x2 + 3)
(3x + 5)(7x2 − 3)
(3x + 5)(7x2 + 3)
question 5(multiple choice worth 1 points)
(08.02)
factor completely 9xy + 36x − 10y − 40.
prime
(y − 4)(9x − 10)
(y + 4)(9x + 10)
(y + 4)(9x − 10)
question 6(multiple choice worth 2 points)
(08.02)
factor completely 14bx2 − 7x3 − 4b + 2x.
(2b + x)(7x2 + 2)
(2b − x)(7x2 − 2)
(2b + x)(7x2 − 2)
prime
question 7(multiple choice worth 2 points)
(08.02)
factor completely 4xy + 9x + 24y + 54.
(4y − 9)(x − 6)
(4y − 9)(x + 6)
(4y + 9)(x − 6)
(4y + 9)(x + 6)

 The answers are given below.

Step-by-step explanation:  We are given to factorise some quadratic expressions.

We will be using the following factorisation formula:

The factorisation is as follows:

We have

Thus, option (B) is correct.

Thus, option (B) is correct.

Thus, option (B) is correct

Thus, option (D) is correct.

Thus, option (C) is the correct option.

Thus, option (B) is the correct option.

Thus, option (D)  is correct.

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation:

starting with:    

5 + x - 12 = 2x - 7   

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)   

5 - 12 = x - 7 (combine and cancel x's from both sides)   

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)   

0 = x (add numbers together on both sides)       

so in order for the equation to be true, x must be 0.   

trying x = -0.5   

5 + x - 12 = 2x - 7 (original equation)   

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)   

5 + -0.5 - 12 = -1 - 7 (did multiplication)   

-7.5 = -8 (did addition on both sides)       

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.   

trying x = 0   

5 + x - 12 = 2x - 7 (original equation)   

5 + 0 - 12 = 2(0) - 7 (plug in value of x)   

5 + 0 - 12 = 0 - 7 (did multiplication)   

-7 = -7 (did addition on both sides)       

since -7 equals -7, that demonstrates that the value of 0 for x is correct.   

trying x = 1   

5 + x - 12 = 2x - 7 (original equation)   

5 + 1 - 12 = 2(1) - 7 (plug in value of x)   

5 + 1 - 12 = 2 - 7 (did multiplication)   

-6 = -5 (did addition on both sides)       

since -6 is obviously not equal to -5, the value of 1 for x is wrong.