Expanding/Removing the brackets
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| https://images.app.goo.gl/PNp4SjayCsJHZQWq7 |
Example: 4(y + 5)
(4 multiple with each term in the bracket)
Meaning: 4(y) {4 multiply (y)} and
:4(5) { 4 multiply (5)}
:4(y) + 4(5)
: 4y + 20
Example: 3b + 2(2 +b)
{use the number and sign infront of the bracket to expand out }
Meaning: 3b + 2(2) {the +2 multiply (2)} + 2(b) {the +2 multiply (b)}
:3b + 2(2) + 2(b)
: 3b + 4 - 2b { collect the like terms}
: 3b - 2b + 4 {3b and -2b are like terms}
: b + 4

Great place for references and later study
ReplyDeleteThank you