Answer:
because each output has exactly one input
Step-by-step explanation:
f(x)=x^2+x
so
f(x-1) = (x - 1) ^ 2 + (x - 1)
= x^2 - 2x + 1 + x - 1
= x^2 - 3x
and
f(x+1) = (x + 1) ^ 2 + (x + 1)
= x^2 + 2x + 1 + x + 1
= x^2 + 3x + 2
now
f(x-1) + f(x+1) = 6
x^2 - 3x + x^2 + 3x + 2 = 6
2x^2 = 4
X = √2
brainliest pls took long enough to solve
Answer:
Step-by-step Solution:
<u>We know that:</u>
- 55 = 5x + 15 (Vertically opposite angles)
<u>Solution:</u>
- 55 = 5x + 15
- => 55 - 15 = 5x
- => 40 = 5x
- => x = 8
Hence, the value of x is 8.
Answer:
57.4
Step-by-step explanation:
63.9 - 6.5 = 57.4
Hope this helps! Stay safe and have a wonderful day! Peace!✌
To evaluate the expression we proceed as follows;
(7x³-16x+8)-(4x³-6x²+8x-9)
opening the parenthesis we have:
7x³+0x²-16x+8-4x³+6x²-8x+9
putting like terms together we get:
(7x³-4x³)+(-16x-8x)+(8+9)+(0x²+6x²)
=3x³+6x²-24x+17
the answer is
=3x³+6x²-24x+17
