Q1 of 81 Page 161

If let us calculate simplified of i. and ii.

Formula used.


(a + b)2 = a2 + b2 + 2ab


(a + b)3 = a3 + b3 + 3ab(a + b)


Let a = m and b =


(a + b)2 = a2 + b2 + 2ab


(m + )2 = m2 + 2 + 2 × m ×


(√3)2 = m2 + + 2 × 1


3 = m2 + + 2


m2 + = 3 – 2 = 1


(a + b)3 = a3 + b3 + 3ab(a + b)


(m + )3 = m3 + 3 + 2 × m × × (m + )


(√3)3 = m3 + + 2 × 1 × (√3)


3√3 = m3 + + 2√3


m3 + = 3√3 – 2√3 = √3[3 – 2]


= √ 3


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