Answer:
x = -9
x = 2
Step-by-step explanation:
We can say that:
x (x + 7) = 6*3
x² + 7x = 18
x² + 7x - 18 = 0
Now solving by quadratic formula we get;
x = 2, and -9
if we substitute in -9 for x, let's see what happens:
(-9) (-9 + 7) = 6*3
(-9) (-2) = 6*3
18 = 18
therefore x = -9 works! Let's see what happens if we substitute x in for 2;
(2) (2 + 7) = 6*3
(2) (9) = 6*3
18 = 18
Therefore x = 2 works as well!
<u>The final answer would be;</u>
<u>x = -9</u>
<u>x = 2</u>
Hope this helps!
It would be 1/8. 2 to the third is 8, and all three answers correct is one option.
Answer: -10x^7y^2
To start, let's multiply the numbers. We have 12 times -5/6. So that becomes -60/6 which is just -10.
Now, we just have to work with the exponents.
For the x's just add the exponents. And the y's will be left how they are our.
Our final answer is -10x^7y^2
X² + 2x +3
If the discriminent Δ = b²-4.a.c <0 , that means the roots (or the zero value) are nit REAL Number (they are imaginary or complex)
Δ = 2² - 4(1)3) = 4 - 12 = -8
since Δ = - 8 < 0 there are no real roots