Ответ:
(√42-2)*2 + 4√42 = 2(√42-2+2√42) = 2(√42-2+2√42) = 2(3√42-2)
Объяснение:
6х²+5mx+m²=0
a=6
b=5m
c=m²
D=b²-4ac = 25m² - 24m² = m²
x₁ = -b-√D / 2a = -5m-m / 12 = - m/2
x₂ = -b+√D / 2a = -5m+m / 12 = - m/3
<u>9a²-24ab+16b²-25</u> = <u>(3a-4b)² -25</u> = <u>(3a-4b-5)(3a-4b+5)</u> = 3a-4b+5
3a-4b-5 3a-4b-5 3a-4b-5
a=1/9, b=2
3*1/9 -4*2+5 = 1/3 -8+5 = 1/3 -3 = -2_2/3