Why is it important to simplify radical expressions before adding or subtracting them?

Mathematics

1 answer:

gayaneshka [121]2 years ago

5 0

Answer:

Radical expressions must be simplified before adding or subtracting so that you are combining “like terms”. In the same way that 2x2 and 3x cannot be combined because they are not like terms, terms involving radicals cannot be combined unless the value under the radical is the same for both terms.

You might be interested in

The product of 4 and twice a number is 60

fredd [130]

Answer: I think the answer would be 4+2n=60.. might be wrong though

Step-by-step explanation:

6 0

3 years ago

PLEASE HELP!!!!!!!!!!!!!!!!!!

N76 [4]

Answer:

c :))))))))))

7 0

3 years ago

?????? help pls lolll

ki77a [65]

Answer is -9

Multiplying by 1/4 is the same as dividing by 4

-36(1/4) = -36/4 = -9

3 0

3 years ago

Find all solutions to the equation.<br><br> cos^2x + 2 cos x + 1 = 0

natali 33 [55]

$\bf cos^2(x)+2cos(x)+1=0\implies \stackrel{\textit{let's notice, this is simply }ax^2+bx+c=0}{[cos(x)]^2+2cos(x)+1=0} \\[2em] [cos(x)+1][cos(x)+1]=0 \\\\[-0.35em] ~\dotfill\\\\ cos(x)+1=0\implies cos(x)=-1\implies x=cos^{-1}(-1)\implies \stackrel{\textit{for the range }[0,2\pi ]}{x=\pi } \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \stackrel{\textit{all solutions}}{x=\pi +2\pi n~~,~~ n \in \mathbb{Z}}~\hfill$

6 0

3 years ago

What is the value of the expression x÷y when x = 30 and y = 18?

Eduardwww [97]

Answer:

5/3 or 1.66 or 1 2/3

Step-by-step explanation:

30/18 you can simply it to the factor of 6 or use a calc

5/3 if the person asks in fraction form and if they say that it can't be an improper fraction then it is 1 2/3 or get 1.6666 in calcutor

7 0

3 years ago