Answer:
x = 7, x = -3
Step-by-step explanation:
We can find the zeros by factoring the equation using the zero product property.
x^2-4x-21 = 0
(x-7)(x+3) = 0
<u>x-7 = 0</u>
x = 7
<u>x+3 = 0</u>
x = -3
Zeros are x=7 and x= -3.
Answer:
x=0
Step-by-step explanation:
x+x-x=x-x
20 is not a perfect square.
36 = 6 times 6.
49 = 7 times 7.
68 is not a perfect square.
121 = 11 times 11.
400 = 20 times 20.
Hope this helps
Answer:
11/2
Step-by-step explanation:
Answer:
you could use the formula
Step-by-step explanation:
That is x = -b<u>+</u>√b^2 - 4ac/2a
where ur x is
x= -b+√b^2-4ac/2a or
x= -b-√b^2-4ac/2a
