Answer:
Step-by-step explanation:
Apply the exponent to the innermost parentheses.
(2r²t)³ = 2³(r²)³t³ = 2³r⁶t³
<span><em>The independent variable is "The number of his friends" </em>
<em>Equation:</em>
<em>5x</em>
which is same as <em>5</em><em></em><em />×x
</span>
21 customers because add 21+21 and u get 42
Given:
The quadratic equation is:

To find:
The discriminant of the given equation and the number of real solutions.
Solution:
If a quadratic equation is
, then the value of discriminant is:

If D<0, then the quadratic equation has no real roots or two imaginary roots.
If D=0, then the quadratic equation has two equal real roots.
If D>0, then the quadratic equation has two distinct real roots.
We have,

Here,
. So, the discriminant of the given equation is:



Since D<0, therefore the number of real solutions is 0.
Hence, the value of the discriminant is -31 and the number of real solutions is 0.