Ok here is another radical problem, let me type it out, ill be as fast as i can

Question

anonymous · Answer

$$-3\sqrt[4]{x^{7}}-3\sqrt[4]{81x ^{7}}$$

anonymous · Answer

(-492xSeven to the seventh power)

jim_thompson5910 · Answer

$$\Large -3\sqrt[4]{x^7}-3\sqrt[4]{81x^7}$$



$$\Large -3\sqrt[4]{x^4*x^3}-3\sqrt[4]{81x^4*x^3}$$



$$\Large -3\sqrt[4]{x^4}*\sqrt[4]{x^3}-3\sqrt[4]{81}*\sqrt[4]{x^4}*\sqrt[4]{x^3}$$



$$\Large -3x\sqrt[4]{x^3}-3*3x*\sqrt[4]{x^3}$$



$$\Large -3x\sqrt[4]{x^3}-9x*\sqrt[4]{x^3}$$



$$\Large (-3x-9x)\sqrt[4]{x^3}$$



$$\Large -12x\sqrt[4]{x^3}$$



So $$\Large -3\sqrt[4]{x^7}-3\sqrt[4]{81x^7}=-12x\sqrt[4]{x^3}$$

anonymous · Answer

Thank you Jim :)  I'm just so stupid :(  I just cant figure these out.

jim_thompson5910 · Answer

you'll get better with more practice

anonymous · Answer

I just have issues grasping it all, square roots just confuse me.

anonymous · Answer

Mine was right too.