9x * x = 9x
9x * 4 = 36x
-8 * x = -8x
-8 * 4 = -32
Combine like terms.
36x - 8x = 28x
We are left with.
9x^2+28x-32
The answer would be the fourth option.
<span>hello :
اthe vertex of the absolute value function defined by ƒ(x) = |x + 5| + 7 is :
</span>(-5,7) because when : x= - 5 ...f(-5) = |- 5 + 5| + 7 = 0+ 7 = 7
Let's me simply step-by-step.
Distribute the Negative sign:
x-5-(4x+2)
x-5-1(4x+2)
x-5-4x-2
(x-4x)+(-5-2)
-3x-7
the answer was -3x-7
and I hope that works you
1 an 7/8 cups of water is the total.
(a). 8x + y = 20, where (b). y = x2 - 2x + 4
So where y is in equation (a), substitute in the value of y in (b).
8x + (x2 - 2x + 4) = 20
8x + (4) = 20
Get rid of the 4 on both sides (since what you do to one side, you must do to the other)
8x + 4 - 4 = 20 - 4
8x = 16
Get rid of the 8 to leave x on its own
8x ÷ 8 = 16 ÷ 8
x = 2
So now that you have x, find y but substituting in the value you just found (2) into one of the starting equations.
8x + y = 20 where x is 2.
8(2) + y = 20
16 + y = 20
Minus 16 from both sides
y = 20 - 16 = 4
So x is 2 and y is 4
