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(2x + 1) 3 (2x + 1) 3 = (2x) 3 + (1) 3 + 3(2x)(1)(2x + 1) | Using Identity VI = 8x 3 + 1 + 6x(2x + 1) = 8x 3 + 1 + 12x 2 + 6x = 8x 3 + 12x 2 + 6x + 1

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191. Factorise

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192. Factorise

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(2x + 1)³(2x + 1)³ = (2x)³ + (1)³ + 3(2x)(1)(2x + 1)
| Using Identity VI
= 8x³ + 1 + 6x(2x + 1)
= 8x³ + 1 + 12x² + 6x
= 8x³+ 12x² + 6x + 1

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194. Write the following cubes in expanded form:
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195. Write the following cubes in expanded form:

open square brackets 3 over 2 straight x plus 1 close square brackets cubed

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196. Write the following cubes in expanded form:

open parentheses straight x minus 2 over 3 straight y close parentheses cubed

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197. Evaluate the following using suitable identities:
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198. Evaluate the following using suitable identities:
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199. Evaluate the following using suitable identities:
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200. Factorise each of the following:
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