To solve this problem, we make use of the discriminant.
The discriminant is a value which reveals the type of solution or roots and
equation has. It has the formula:
D = b^2 – 4 a c
where the coefficients are taken from the equation ax^2 +
bx + c. The conditions are:
<span>D < 0 no real
roots = two roots that are complex conjugates</span>
<span>D = 0 one real
zero</span>
<span>D > 0 two
distinct real roots</span>
Given the equation 2x^2 + 4x + 4, the coefficients are
therefore:
a = 2
b = 4
c = 4
Plugging these values into the formula:
D = 4^2 – 4 (2) (4)
D = -16
<span>Therefore the solutions or the roots are complex
conjugates or imaginary. Hence there is no real root.</span>
Answer:
x=12
Step-by-step explanation:
X=12 because we can see from the picture that the left line is drawn between parallel lines, meaning that the two angles (10x-13 and 4x+25) are supplementary, meaning that they add up to 180.
so we can now write an equation and solve it
(10x-13)+(4x+25)=180
14x+12=180
14x=168
x=12
Answer:
it's 6
Step-by-step explanation:
B=7 and D=13, so 13-7= 6
Answer:
it is an 20 degree line
Step-by-step explanation:
0.007 is smaller than 0.07
