Simplify
1.53 + 4.73 + 3.83 - 3 x 1.5 x 4.7 x 3.81.52 + 4.72 + 3.82 - 1.5 x 4.7 - 4.7 x 3.8 - 1.5 x 3.8
Apply a3 + b3 + c3 - 3abca2 + b2 + c2 - ab - bc - ca = a + b + c
Hence the answer is 1.5 + 4.7 + 3.8 = 10.
If X + Y = 19 and X - Y = 7, then XY = ?
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Cosec (90 - θ)
22 - 33 + 43 - 62 = ?
Cos2 90° + Cosec2 90° - Cot2 45° = ?
Find the value of y(y4 - y2 - y) when y = 5.
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What is the value of [(√529) + (√5.29) + (√0.0529)]?
The two equations x - 4y = 0 and 4x + 3y = 19 have a solution (a, b). Find the value of aba + 4b.