Not sure what standard form is, but I can solve for x
so I'm assuming that x2 means x squared or x^2 so
x^2+7x+12=0
since it equals zero, if we can factor it, then
if we have xy=0 then x and/or y=0 so
to factor x^2+7x+12
find what 2 numbers multiply to get 12 and add to get 7 so
12=2 times 2 times 3 or 2 times 6 or 1 times 12 or 3 times 4
the numbesr are 4 times 3 so
x^2+7x+12
facotrs out to
(x+4)(x+3) so
x^2+7x+12=0
(x+4)(x+3)=0
set each to zero
x+4=0 and x+3=0
x+4=0
subtract 4 form both sides
x=-4
x+3=0
subtract 3 from both sides
x=-3
x=-4 or -3
Answer:
C
Step-by-step explanation:
I just learned about this and took a test
Answer:
The value of
Step-by-step explanation:
Given : Equation -
To find : Solve the equation?
Solution :
Step 1 - Write the equation
Step 2 - Add 5 both side,
Step 3 - Divide by 3,
Therefore, The value of
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given:
We need to completely isolate to solve.
Finally, multiply both sides by -2 to completely isolate .