Answer:
x = -2
Step-by-step explanation:
f(x) = 2( x^2 +9x -5x - 45)
f(x) = 2(x^2 + 4x - 45)
f(x) = 2x^2 +8x -90
axis of symmetry formula: x = -b / 2a
x = -(8) / 2(2)
x = -8 / 4
x = -2
*you can also graph the equation on a graphing calculator and find the middle of the parabola
Answer:
11
Step-by-step explanation:
4x+3 = 7x-3
3x=6
x=2
plz brainliestt
Answer:
(?) = (x-5)
Step-by-step explanation:
Use difference of squares:
Answer:
your answer is C) A negative radius does not make sense.
Step-by-step explanation:
hope it helps ^_^
Answer:
Below.
Step-by-step explanation:
This factors to the product of 2 binomials like (x + a)(x + b), where a and b are 2 numbers.
40 = 4 * 10 and 14 = 4 + 10 so the answer is
(x + 4)(x + 10).
If we expand this we will get back to the quadratic expression:
(x + 4)(x + 10)
= x(x + 10) + 4(x + 10)
= x^2 + 10x + 4x + 40
= x^2 + 14x + 40.
