Answer:
3x^3 + x^2 -7x - 5
Step-by-step explanation:
SOOOOOOO you use the distributive property and multiply by each term.
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For quadratics, these formulas are used mainly for factoring.
Your equation can be written as ...
... 2(x² +2x -3) = 0
You factor this by looking for factors of -3 (c=x1·x2) that add to give +2 (b=-(x1+x2)). These are {-1, +3}, so the factorization is ...
... 2(x -1)(x +3) = 0
The roots are then 1 and -3, which sum to -b = -2.
(You will note that the numbers used in the binomial factors are the opposites of the roots x1 and x2 in the Viete's Formulas. That is how we can look for them to sum to "b", rather than "-b".)
Answer:
2, 4
Step-by-step explanation:
X, Y
5, 2
X is like the floor, Y is like the wall
X: Positive is Right, Negative is left, So you Subtract if you're going left and Add if going right. Aka: 5-3
Y : Positive is Up, Negative is Down. So you Add since you're moving up. Aka: 2+2.
