Simplify completely 4x^2-7x+3 / x^2 + 5x-6 a) 4x+ 1 / x-1 b) 4x-1 / x+6 c) 4x+3 / x-1 d) 4x-3 / x+6 asap !

D)  

Step-by-step explanation:

First we have to factorize and then cancel the like terms.

Given,

Now, we got the like term  (x-1).

Canceling this like term we get

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240