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8090 [49]
3 years ago
8

Showthat (2+√3)(2-√3)(5+root2)(5-root2) is rational number.​

Mathematics
2 answers:
Novosadov [1.4K]3 years ago
8 0
(2+√3)(2-√3)(5+ √2)
(5-√2)=(2^2-√3^2)(5^2-√2^2)=(4-3)(25-2)=23 and 23 is rational number
amid [387]3 years ago
6 0

Answer:

(2+3)(2−3)(5+2)(5−2)=>(22−(3)2)(52−(22))=>(4−3)(25−2)=>(1)(23)=>23

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Answer:

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Step-by-step explanation:

By Pythagoras:

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Answer:

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b) Height of the football after 2 seconds is 448 feet.

ii. The football would not hit the ground after 2 seconds.

Step-by-step explanation:

Given:

s = -16t^{2} + V_{o}t + s_{o}

where: s is the height of the football above the ground, t is the time, V_{o} is the initial velocity and s_{o} is the initial height.

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s = -16t^{2} + 192t + 96

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s = -16(2) + 192(2) + 96

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s = 448

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ii. The football would not hit the ground after 2 seconds.

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