Question

Write the expression 7x^10 + 6x^5 + 5 in quadratic form.

a 7x P) + 6x +5
7x10 + 6(x+0 x
6. 7(x)* +6x? +5
7720 + 6(220)2 = 5

Answer 1

For this case we have the following expression:

`7x^(10) + 6x ^ 5 + 5`

We must rewrite it quadratically:

By definition, a quadratic equation is of the form:

`ax ^ 2 + bx + c = 0`

Now, suppose
`u = x ^ 5`

Rewriting the given expression with the change of variable we have:

`7u ^ 2 + 6u + 5`

So, we have a quadratic expression.

Returning the change we have:

`7 (x ^ 5) ^ 2 + 6 (x ^ 5) +5`

ANswer:

Option B