find the sum and product of the given roots and write the quadratic equation in the form ax²+bx+c=0,given r1=2 and r2=7.
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Answer:
x²-2x+7=0 hope it helps!!
Answer:
f(x) = a(x² - 9x + 14)
Step-by-step explanation:
1. f(x) = a(x - r1) (x - r2)
f(x) = a[x - (2)] [x - (7)]
f(x) = a(x - 2) (x - 7)
2. Multiply. (Use FOIL Method)
F-first
(x)(x) = x²
O-outer
(x)(-7) = -7x
I-iner
(-2)(x) = -2x
L-last
(-2)(-7) = 14
So it will become
f(x) = a(x² - 9x + 14)
where a is any nonzero constant