1) (t-5)^2 = (t-5)(t-5)
2) x^2-5x+2x-10 = x(x-5)+2(x-5) = (x+2)(x-5)
3) 3x^2-5x-3x+5 = 3x(x-1)-5(x-1) = (3x-5)(x-1)
4) -x^2+4x-2x+8 = x(x+4)-2(x-4)
Тут нельзя так делать ♀️
5) (4x-3)(4x+3)
6) a(-5a+8)
Formula: sinx+siny=2.sin((x+y)/2).cos ((x-y)/2)
-V2=2.sin(pí/4).cos((x-y)/2
-V2=2.V2/2.cos((x-y)/2)
-1=cos((x-y)/2)
(x-y)/2=pí
x-y=2.pí
x+y=pí/2
2x=2pí+pí/2, x=pí+pí/4,x=5pí/4
2y=pí/2-2pí,y=pí/4-pí,y=-3pí/4
Korni iz interval /0,2pí/
Obšče: x=5pí/4+2k.pí,y=-3pí/4+2k.pí, k=0,1,-1,2,-2,.......
(x²)^24
(x⁴)^12
(x^12)⁴
(x^24)²
#2
(2³*2)^k=2^16
(2⁴)⁴=2^16
(3^k*3²)²=3^18
(3^2k*3⁴=3^18
3^14*3⁴=3^18
(7²*7³)^5=7^k
(7^5)^5=7^k
7^25=7^25
(5^k*5^k-1)²=5^10
5^2k*5^2k-2=5^10
5^4k-2=5^10
5^4*3-2=5^10
5^10=5^10