Odpowiedź:
1.
49- k² = (7 - k)(7 + k)
2.* *
4a² + 12a +9 = ( 2a +3)²
16 -8y +y² =(4 - y)²
3.
7/25 = 7 : 25 = 0,28
1/9 = 1: 9 = 0,1111.... = 0,(1)
4.
0,325 = 325/1000 =13/40
0,777 = 777/1000
5.
(- 2)⁴ = (- 2) * ( - 2) * (- 2) * ( - 2) = 4 * 4 = 16
(3/4)³ = 3/4 * 3/4 * 3/4 = 27/64
7⁻² = (1/7)² = 1/7 * 1/7 = 1/49
32²⁾⁵ = (2⁵)²⁾⁵ = 2¹⁰⁾⁵ = 2² = 4
log₄256 = 4 ponieważ 4⁴ = 256
log₂0,125 = log₂1/8 = - 3 ponieważ 2⁻³ = (1/2)³ = 1/8
log₃1/27 = - 3 ponieważ 3⁻³ = (1/3)³ = 1/27
log₉1 = 0 ponieważ 9⁰ = 1 (każda loczba podniesiona do potęgi 0 = 1)
