Answer:
or
Step-by-step explanation:
we have
f(3+√2 )=f(3− √2 )=0
so
x1=3+√2 and x2=3−√2 are the roots or x-intercepts of the quadratic equation
The quadratic equation in factored form is equal to
substitute
Find the value of the coefficient a
Remember that
f(1)=−8
so
For x=-1 -----> f(x)=-8
substitute
solve for a
apply difference of squares
therefore
simplify
Applying distributive property
Answer:
it is 3 i am pretty sure
Step-by-step explanation:
Sarah = 53 inches
Brother = 53 + 4 = 57 inches
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Convert inches to feet
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57 ÷ 12 = 4 feet 9 inches
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Answer: 4 ft 9 in
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Distribute
(x-3)(x+9)=-27
x^2+6x-27=-27
add 27 to both sides
x^2+6x=0
factor out x
x(x+6)=0
set each to zero
x=0
x+6=0
x=-6
x=0 and or -6
x=-6 or 0
