Lesson 2️⃣ F.O.I.L ➕ Lesson 3️⃣ Squaring A Bracket Flashcards
1
Q
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(a+3) (a-7)
A
a2- 7a+3a-21
= a 2-4a-21
2
Q
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(b-1) (b-5)
A
b 2-5b - 1b + 5
= b 2 - 6b +5
3
Q
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(a+2) 2
A
(a+2) (a+2)
a 2 + 2 + 2a + 4
= a 2 + 4a + 4
4
Q
(a-b) 2
A
(a-b) (a-b)
a 2 - ab - ab + b 2
= a 2 - 2ab + b 2
5
Q
(5b + 3) 2
A
(5b +3) (5b + 3)
25b 2 + 15b + 15b + 9
= 25b 2 + 30b + 9
6
Q
(2a - 3b) 2
A
(2a - 3b) (2a - 3b)
4a 2 - 6ab - 6ab + 9b 2
4a 2 - 12ab + 9b 2
7
Q
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(2b + 1) (3b - 5)
A
6b 2 - 10b + 3b -5
6b 2 - 7b - 5
8
Q
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(3a - 2) (4a -3)
A
12a 2 - 9a - 8a + 6
12a 2 -17a + 6
9
Q
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(a - 5) (4 - 3a)
A
4a - 3a 2 - 20 + 15a
19a - 3a 2 - 20
