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Question
Expand the expression: (1– 2x)5
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Solution
By using Binomial Theorem, the expression (1– 2x)5 can be expanded as
`(1– 2x)^5`
= `""^5C_0 (1)^5 - ^5C_1 (1)^4 (2x) + ^5C_2 (3)^3 (2x)^2 - ^5C_3 (1)^1 (2x)^4 - ^5C_5 (2x)^5`
`1 - 5 (2x) + 10(4x^2) - 10 (8x^3) + 5 (16x^4) - (32x^5)`
= `1 - 10x + 40x^2 - 80x^3 + 80x^4 - 32x^5`
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