Most quadratic functions(which is what you have there, to a degree of 2) are solved using factoring and the zero product law. If you can not factor then you have to use the quadratic formula or graph it. However this one can be factored.
It's pretty simple to just factor it by inspection but I use the chart method, if you know decomposition that works as well.
Factoring gives us,

Then you set each factor to 0 and solve for x,



And the second one,


The solutions to this equation are
x = -1/2, 3
Solve. Note the equal sign. What you do to one side, you do to the other. Remember to follow PEMDAS.
First, distribute 5 to all terms within the parenthesis
5(w - 1) = (5)(w) + (5)(-1) = 5w - 5
Next, simplify. Combine like terms
5w - 5 - 2 = 5w + 7
5w - 7 = 5w + 7
Next, isolate the variable. Add 7 to both sides, and subtract 5w from both sides
5w (-5w) - 7 (+7) = 5w (-5w) + 7 (+7)
5w - 5w = 7 + 7
0 = 14 (Untrue).
0 solutions, or (A) is your answer
~<em>Rise Above the Ordinary</em>
Answer:
21-2x
Step-by-step explanation:
11-2(x-5)
11-2x+10
21-2x
not completely sure if im right... if i am can you mark me brainliest
Answer:
slope =<u>-3</u>
4
Step-by-step explanation:
slope = <u>y2 - y1</u>
x2 - x1
=<u>2 - 5</u>
6 - 2
= <u>-3</u>
4
Answer:
c+2
Step-by-step explanation: