Ch 2. Formula 1
3.) If a = 2, b = 3, verify that:
(1) a3 + b3 = (a + b)(a? - ab + b) (ii) (a + b)3 = a + 3ab + 3ab2 + b
Answers
Answered by
1
Answer:
3
Step-by-step explanation:
(a+b)
3
=(a+b)
2
(a+b)
=(a
2
+2ab+b
2
)(a+b)
=a
3
+2a
2
b+ab
2
+a
2
b+2ab
2
+b
3
=a
3
+3a
2
b+3ab
2
+b
3
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