Answer:
10ˣ² +19ˣ + 6
Step-by-step explanation:
5ˣ(2x + 3) + 2 (2x + 3 )
10x² + 15x + 2(2x + 3 )
10x² + 15x + 4x + 6
= 10x² + 19x + 6
Answer:
9
Step-by-step explanation:
f(x) = 2(2)² - 3(2) + 7
f(x) = 8 - 6 + 7
f(x) = 2 + 7
f(x) = 9
Answer:
Step-by-step explanation:
÷ 
= X ÷ 243 =3
So X = 3×243= 729
Answer:
f(x) = -4
Step-by-step explanation:
Given function: f(x) = 4 + 4x - 4x²
Here, we are being asked to find the value of the function when x is equal to 2.
Substitute 2 as the value of x in the function and simplify:
⇒ f(x) = 4 + 4x - 4x²
⇒ f(2) = 4 + 4(2) - 4(2)²
⇒ f(2) = 4 + 8 - 4(4)
⇒ f(2) = 4 + 8 - 16
⇒ f(2) = 12 - 16
⇒ f(2) = -4
This means that when the value of x is 2, the value of the function is -4.
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Answer:
Length= 24 feet
Width= 16 feet
Step-by-step explanation:
Equation 1) Perimeter = 2L+2W
Equation 2) Perimeter = 80
Equation 3) L-8=W
1) Substitute L-8 as W in the first equation, and 80 as the Perimeter:
2L+2(L-8)=80
2) Distribute 2 to L and -8:
2L+2L-16=80
3) Add 16 to both sides, and combine alike terms:
4L=96
4) Divide both sides by 4:
L=24
5) Substitute 24 as L in the third equation:
24-8=W
6) Solve:
W=16
