Question

Tolong yang 2, 5,7 soal di bawah ini dgn cara yg jls n lngkap

Answer 1

2. (2^4 × 8^-2)/(4^-4)
= (2^4 × (2^3)^-2)/((2^2)^-4)
= (2^4 × 2^-6)/(2^-8)
= 2^(4 - 6 - (-8))
= 2^(-2 + 8)
= 2^6 = 64

5. E = m . c^2
E = 0,24 . (3 × 10^8)^2
E = 2,4 × 10^-1 . 9 × 10^16
E = 21,6 × 10^15
E = 2,16 × 10^16 J

7. √6/(√3 + √2)
= √6/(√3 + √2) × (√3 - √2)/(√3 - √2)
= √6(√3 - √2)/((√3)^2 - (√2)^2)
= (√18 - √12)/(3 - 2)
= √18 - √12 = 3√2 - 2√3