Let x be the number
2x - 7 + 5x
=7x-7
I think the answer is sas
Answer:
Factors :- (x - 5) (x + 2)
Values :- x = 5, x = -2
Step-by-step explanation:
= > x^2 - 3x - 10 = 0
= > x^2 - (5 - 2)x - 10 = 0
= > x^2 - 5x + 2x - 10 = 0
= > x (x - 5) + 2 (x - 5) = 0
= > (x + 2) ( x - 5) = 0...factors
= > x = 5, - 2...values
<h2>Hope it helps you!! </h2>
I see your last line is : c(x) = 0.9(x^2-10)^2 + 101.1
Let y = x^2, then c(y) = 0.9(y-10)^2 + 101.1
Apparently, c(y) is a parabola, min is 101.1 when y = 10, max is infinity
So let x^2 = 10 -> x = sqrt(10) or -sqrt(10), min is 101.1, max is infinity
