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which expression is equivalent to the given expression?

5x−2

a. 2−5x

b. 2x−2+3x2x−2+3x

c. 3−5+2x3−5+2x

d. 5x−2x

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

1. what is the measure of ∠abc? what is the measure of ∠abd?

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?