Oblicz wzorami skroconego mnozenia (-a+pierwiastek z 2 b)^ = (-2y-pierwiastek z x)^ =

(-a+√2b)²=a²-2a√2b+|2b| (-2y-√zx)²=4y²+4y√zx+|zx|

(-a + pier z 2b)^= (-a)^ + 2(-a)(pier z 2)+ 2b^ = -a^ - 2apier z 2 + 2b^ (-2y - pier z x)^ = (-2y)^ - 2(-2y)(pier z x) + x^ = -4y^ +4y pier z x + x^