2xsquared +3x+1=0 solve using quadratic formula
1 answer:
Answer:
<em>x</em> = , -1
Step-by-step explanation:
The quadratic formula is: <u>-b±√b²-4ac</u>
2a
The discriminant (Δ) is b²-4ac. Evaluating this expression after substituting for <em>a, b </em>and <em>c</em> helps you identify the number of real solutions to the quadratic equation.
<em>a </em>= 2, <em>b</em> = 3, <em>c </em>= 1
Δ = -3²- 4 x 2 x 1;
Δ = 1
<u>-3±1 </u>
4
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<u>Given</u>:
Given that FGH is a right triangle. The sine of angle F is 0.53.
We need to determine the cosine of angle H.
<u>Cosine of angle H:</u>
Given that the sine of angle F is 0.53
This can be written as,
Applying the trigonometric ratio, we have;
----- (1)
Now, we shall determine the value of cosine of angle H.
Let us apply the trigonometric ratio , we get;
----- (2)
Substituting the value from equation (1) in equation (2), we get;
Thus, the cosine of angle H is 0.53