The sum of a number and its square is 42. which equation can be used to find the two numbers for which this is true? x2 + x = 42 x2 + 2x = 42 x2 + x + 42 = 0 x2 + 2x + 42 = 0

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)