Which expression is equivalent to 2x2 + 2x-4 ?
2x2 - 4x + 2
X+2
X-1
X+2
-2
X + 2
x-2

2 (x + 2) (x - 1)

Step-by-step explanation:

Simplify the following:

2 x^2 + 2 x - 4

Factor 2 out of 2 x^2 + 2 x - 4:

2 (x^2 + x - 2)

The factors of -2 that sum to 1 are 2 and -1. So, x^2 + x - 2 = (x + 2) (x - 1):

2 (x + 2) (x - 1)

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.