WILL FAN AND MEDAL IF HELP WITH QUESTIONS

Question

anonymous · Answer

Simplify $$3\sqrt{10}+7\sqrt{15}-6\sqrt{10}-4\sqrt{15}$$
A. $$3\sqrt{10}-3\sqrt{15}$$

B. $$3\sqrt{15}-3\sqrt{10}$$

C. $$3\sqrt{30}-3\sqrt{20}$$

D. $$3\sqrt{20}-3\sqrt{30}$$

perl · Answer

first collect like terms

anonymous · Answer

ok

anonymous · Answer

meaning? sorry this whole equation is still new to me

perl · Answer

$$\Large {
3\sqrt{10}+7\sqrt{15}-6\sqrt{10}-4\sqrt{15}
\= 7\sqrt{15}-4\sqrt{15}+3\sqrt{10}-6\sqrt{10}
\ =(7-4)\sqrt{15}+(3-6) \sqrt{10}
\= 3\sqrt{15}+(-3) \sqrt{10}

}
$$

anonymous · Answer

then what?

perl · Answer

$$\Large {
3\sqrt{10}+7\sqrt{15}-6\sqrt{10}-4\sqrt{15}
\= 7\sqrt{15}-4\sqrt{15}+3\sqrt{10}-6\sqrt{10}
\ =(7-4)\sqrt{15}+(3-6) \sqrt{10}
\= 3\sqrt{15}+(-3) \sqrt{10}
\= 3\sqrt{15}-3 \sqrt{10}
}
$$

perl · Answer

that cant be simplified further

anonymous · Answer

thank you!

anonymous · Answer

can this equation be simplified?
$$5\sqrt{11}-12\sqrt{11-2\sqrt{11}}$$

A. $$-33\sqrt{9}$$

B. $$-11\sqrt{9}$$

C. $$-9\sqrt{11}$$

D. $$-9\sqrt{33}$$

anonymous · Answer

@perl

anonymous · Answer

* the equation is $$5\sqrt{11}-12\sqrt{11}-2\sqrt{11}$$

anonymous · Answer

@texaschic101 @iGreen @confluxepic ^ help?

igreen · Answer

One question per post, close this and open a new one.

anonymous · Answer

ok how can i post the equation in a new post?