Rozłóż na czynniki wyrażenia:
a)
b)
c) (x-7)x+3(7-x)
d)
x²-2=(x+√2)(x-√2)
y²+10y+25=(y+5)²
c)
x(x-7)+3(7-x)=x²-7x+21-3x=x²-10x+21=(x-3)(x-7)
8x³-1=(2x)³-1³=(2x-1)(4x²+2x+1)
a) =(x-√2)(x+√2)
b) =(y+5)²
c) =(x-3)(x-7)
d) =(2x-1)(4x²+2x+1)
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a)
x²-2=(x+√2)(x-√2)
b)
y²+10y+25=(y+5)²
c)
x(x-7)+3(7-x)=x²-7x+21-3x=x²-10x+21=(x-3)(x-7)
d)
8x³-1=(2x)³-1³=(2x-1)(4x²+2x+1)
a) =(x-√2)(x+√2)
b) =(y+5)²
c) =(x-3)(x-7)
d) =(2x-1)(4x²+2x+1)