Wykonaj mnożenie i zredukuj wyrazy podobne.
a)
a)(x+2)(x+4)=x²+4x+2x+8=x²+6x+8
b)(-3x-4)(5-2x)=-15x+6x²-20+8x=6x²-7x-20
c)(√3+2)(2√3-3) = 6 -3√3 +4√3 -6 = √3
d) (2√a-√b) (-√b+2√a)= (2√a-√b)(2√a-√b)=4a-b
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a)(x+2)(x+4)=x²+4x+2x+8=x²+6x+8
b)(-3x-4)(5-2x)=-15x+6x²-20+8x=6x²-7x-20
c)(√3+2)(2√3-3) = 6 -3√3 +4√3 -6 = √3
d) (2√a-√b) (-√b+2√a)= (2√a-√b)(2√a-√b)=4a-b