Simplify the following using addition and subtraction properties of surds:
(i)
5 cube 40 +2 cube 625 - 2 cube 320
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Step-by-step explanation:
First seperate the question in to three parts
1st part=5cube40
2nd part=+2cube625
3rd part= –2cube320
first find the 1st part=5cube40
=(125)40
=125×40
=5000
let's move to second part=+2cube625
= (8)625
=8×625
=5000
now let's move to third part=–2cube320
= {(-2×-2)(-2×-2)}320
={4×4}320
=8×320
=2560
now sum all the three parts.
=5000+5000+2560
=12560.
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