X²+3x-24=0 ; x²+3x=24 ; 5x=24 ; x=4,8
а) f(x) = 4√x + x² - 2x
f'(x) = 4 * 1/(2√x) + 2x - 2 = 2/√x + 2x - 2
f'(x₀) = 2/√4 + 2 * 4 - 2 = 2/2 + 8 - 2 = 7
б) f(x) = (x³+x)(x²-1) = x⁵ - x³ + x³ - x
f'(x) = 5x⁴ - 1
f'(x₀) = 5 * (-1)⁴ - 1 = 5 * 1 - 1 = 4
Просто раскрываем скобки
1) х²+8х-4=0
2)х²+4х-5х-20-2=0
х²-х-22=0
3)3х²-15х=х²+х-х²
3х²-15х-х=0
3х²-16х=0