Question

Simplify.(7V8 - 4)(V6-7)

Answer 1

The question is given as

`(7\sqrt[]{x}-4)(\sqrt[]{x}-7)`

This simply can be expanded to be

`7\sqrt[]{x}(\sqrt[]{x}-7)-4(\sqrt[]{x}-7)`

Expanding the parentheses, we have

`7\sqrt[]{x^2}-49\sqrt[]{x}-4\sqrt[]{x}+28`

Simplifying the roots, we have

`7x-49\sqrt[]{x}-4\sqrt[]{x}+28`

Simplifying further, we have the final answer as:

`7x-53\sqrt[]{x}+28`