Best answer:
Roots are values of x for which y equals 0.
When x is -3 or -1, the expressions x+3 or x+1, respectively, equal zero.
Anything times zero is zero.
Thus, when x is -3 or -1, (x+3) times (x+1) times anything is zero.
y = (x+3)(x+1) is quadratic, so there's one answer.
You can also multiply it by a constant,...
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Best answer: Roots are values of x for which y equals 0.
When x is -3 or -1, the expressions x+3 or x+1, respectively, equal zero.
Anything times zero is zero.
Thus, when x is -3 or -1, (x+3) times (x+1) times anything is zero.
y = (x+3)(x+1) is quadratic, so there's one answer.
You can also multiply it by a constant, e.g. y = 7(x+3)(x+1)
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2 days ago