Odpowiedź:
a)
2x + x² x = 5
2 * 5 + 5² = 10 + 25 = 35
b)
k² - k³ k = -3
(-3)² - (-3)³ = 9 + 27 = 36
c)
3/4(t - 2)² t = -8
3/4(-8 - 2)² = 3/4 * (-10)² = 3/4 * 100 = 3 * 25 = 75
d)
(2a - b²)/4 a = 4; b = -3
[2 * 4 - (-3)²]/4 = (8 - 9)/4 = -1/4
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Odpowiedź:
a)
2x + x² x = 5
2 * 5 + 5² = 10 + 25 = 35
b)
k² - k³ k = -3
(-3)² - (-3)³ = 9 + 27 = 36
c)
3/4(t - 2)² t = -8
3/4(-8 - 2)² = 3/4 * (-10)² = 3/4 * 100 = 3 * 25 = 75
d)
(2a - b²)/4 a = 4; b = -3
[2 * 4 - (-3)²]/4 = (8 - 9)/4 = -1/4
Szczegółowe wyjaśnienie: