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(a-y) (a²+ay+y²)

a³-b6=(a-b²) (a²+ab²+b⁴)

a³+8b³=(a+2b)(a²-4ab+2b²)

x9-=(x³-y6)(x6+x³y²+y⁴)

x²+2xy+y²

4a+10a+25

441c²+168cd²+16d⁴

49t²+182ts²+169s6

(a+b)(a²-ab+b²

(x+2)(x²-2x+4)

(3a+1)(9a²-3a+1)

(b+4)(b²-4b+16)

(2c+5)(4c-10c+25)

(4a+b)(16a-4ab+b²)

y=2x+4

y=4,5x-7

2x+4=4,5x-7

2x-4,5x=-7-4

-2,5x=-11

x=4,4