a) 2√32 + 3√72 - √72 =
b) √2(4√8 + √18 - √32) =
n x E
1 = ------------ wyznaczyć n.
n x r1 + r2
a) 2√32 + 3√72 - √72 = 2√32 + 3* 2√32 - 2√32 = 6√32 = 6* 4√2 = 24 √2 b) √2(4√8 + √18 - √32) = 4* √8* √2 + √2 * √18 - √2 * √32 = 4* √16 + √38 - √64 = 4*4 + √38 - 8 = 16 - 8 + √38 = 8 + √38
n = (r1+r2) : E <- nie jestem pewna, ale chyba dobrze :)
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a) 2√32 + 3√72 - √72 = 2√32 + 3* 2√32 - 2√32 = 6√32 = 6* 4√2 = 24 √2
b) √2(4√8 + √18 - √32) = 4* √8* √2 + √2 * √18 - √2 * √32 = 4* √16 + √38 - √64 = 4*4 + √38 - 8 = 16 - 8 + √38 = 8 + √38
n = (r1+r2) : E <- nie jestem pewna, ale chyba dobrze :)