What can I do with when brackets are there like 2(x+90) I dont get it

4 Answers

justaguide's profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted on

To solve problems that have the expression of the form 2(x + 90), you have to open the brackets. When that is done each term inside the bracket is multiplied by the term outside.

In the case of 2(x + 90), you would have to multiply both x as well as 90 by 2.

2(x + 90)

=> 2*x + 2*90

=> 2x + 180

Similarly if you have to deal with something like (a + b)(c + d)

=> a(c + d) + b(c + d)

=> ac + ad + bc + bd

The result of 2(x + 90) is 2x + 180

Top Answer

namji's profile pic

namji | Elementary School Teacher | (Level 1) eNoter

Posted on

Hi, wizarcd.

In order to solve the brackets in math, you can expand them.

In order to expand, you must multiply the component outside the bracket with what is inside the bracket.

For example, if there is 2(x+90), you can multiply 2 by x and 90.

so the answer would be 2x+180.


shadover's profile pic

shadover | (Level 1) Honors

Posted on

the bracket mean multiplication.


2(x+90) = 2x+180


tylak's profile pic

tylak | Student, Grade 10 | (Level 1) eNoter

Posted on

when you get brackets like that you have to multiply it     

for example 2(x+90)=2x+180