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Expanding single brackets
- Remember to multiply all the terms inside the bracket by the term immediately in front of the bracket.
If there is no term in front of the bracket, multiply by 1 or -1.
For I/GCSE Mathematics, you may try out the following questions below!
- 3(a - 4) = 3a - 12
6(2c + 5) = 12c + 30
- (4a + 2) = -4a - 2
8 - 2(t + 5) = -2t - 2
2p(3p + 2) - 5(2p - 1) = 6p2 - 6p + 5
If you have any question, you can
Expanding double brackets
- Split the double brackets into 2 single brackets and then expand each bracket and simplify.
If a single bracket is squared [e.g. (a + 5)2] change it into double brackets (a + 5)(a + 5).
For I/GCSE Mathematics, you may try out the following questions below!
- (c + 2)(c + 6) = c2 + 8c + 12
(3a – 4)(5a + 7) = 15a2 + a – 28
(p + 2)(7p – 3) = 7p2 + 11p – 6
(c + 7)2 = c2 + 14c + 49
(4g – 1)2 = 16g2 – 8g + 1
That's the end!
