Find the value of the expression 2x2 - 4x2 + 7x – 7 if x= 3. What is the value if x = 2?
1 answer:
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Once the rock hits the ground, we know that its height will be equal to 0m
because of this, we can replace H(x) with 0
now all we have to do is get x by itself
so..
then
now take the square root of each side
2.857 seconds (rounded to the third decimal)
because of this, we can replace H(x) with 0
now all we have to do is get x by itself
so..
then
now take the square root of each side
2.857 seconds (rounded to the third decimal)
5
x 5
5
x 5
5³ x 5
They all work because their exponents all add up to 11.
Hope this helps!
5
5³ x 5
They all work because their exponents all add up to 11.
Hope this helps!