(4√6-10)²=(10-4√6)²
10 > 4√6 значит второе верно
log4 (4√6-10)² + log8 (4√6+10)³ = log2² (10-4√6)² +log2³ (10+4√6)³ = 1/2*2 log2 (10-4√6) + 1/3*3 log2 (10+4√6)= log2 (10-4√6)(10+4√6)=log2 (100-96)= log2 2²=2
1. y^19*y^10 / y^26=y^29 / y^26=y^3. 2. -5m^4n^7*2m^3n= -10m^7n^8; (-4a^4b)^2=16a^10b^2.
X² + 4x = 5
x² + 4x - 5 = 0
D = 4² - 4·1·(-5) = 16 + 20 = 36
Ответ: -5.