Answer:
B
Step-by-step explanation:
12x² - 157x - 40
Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term
product = 12 × - 40 = - 480 and sum = - 157
The factors are + 3 and - 160
Use these factors to split the x- term
12x² + 3x - 160x - 40 ( factor the first/second and third/fourth terms
= 3x(4x + 1) - 40(4x + 1) ← factor out (4x + 1) from each term
= (4x + 1)(3x - 40) ← in factored form → B
What are the other ratios?
Answer:
25/2
Step-by-step explanation:
10[(1/2+1/4)+2 x 1/8 x 2]
10[((2+1)/4)+1/4x2]
10[3/4+1/2]
10[(3+2)/4]
10x5/4
=25/2
