Wyrażenia algebraiczne.
1.Skróć ułamki:
a.)
b.)
c.)
a)
-4 + 3√(4*7) -4+6√7 -2+3√7
------------=----------=-----------
8 8 4
b)
(√(4*3)-2√(9*3))/√3-2 =
=(2√3-6√3)/√3-2 =
=-4√3/√3-2 * √3+2/√3+2 =
= (-12 - 8√3)/-1 = 4(3+2√3)
c)
√8 -4 √2+2 √16+2√8-4√2-8 4 + 4√2-4√2-8
------- * ---------- =------------------=---------------=
√2-2 √2 + 2 2-4 -2
= -4/-2 = 2
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a)
-4 + 3√(4*7) -4+6√7 -2+3√7
------------=----------=-----------
8 8 4
b)
(√(4*3)-2√(9*3))/√3-2 =
=(2√3-6√3)/√3-2 =
=-4√3/√3-2 * √3+2/√3+2 =
= (-12 - 8√3)/-1 = 4(3+2√3)
c)
√8 -4 √2+2 √16+2√8-4√2-8 4 + 4√2-4√2-8
------- * ---------- =------------------=---------------=
√2-2 √2 + 2 2-4 -2
= -4/-2 = 2