1. Doprowadź do postaci a√b
a) 7√5 + √20
b) √48 - √3
c) √12 + √27
d) √45 - √125
Doprowadź do postaci a√b
a) 7√5 + √20= 7√5 + √4*5= 7√5+2√5= 9√5
b) √48 - √3= √3*16 -√3 = 4√3-√3= 3√3
c) √12 + √27= √4*3 +√3*9= 2√3 + 3√3=5√3
d) √45 - √125= √5*9 - √5*25 = 3√5 - 5√5= -2√5
a) 7√5 + √20= 7√5+√4x5=7√5+2√5=9√5
b) √48 - √3=√16x3-√3=4√3-√3=3√3
c)√12+√27=√4x3+√9x3=2√3+3√3=5√3
d)√45-√125=√9x5-√25x5=3√5-5√5=-2√5
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Doprowadź do postaci a√b
a) 7√5 + √20= 7√5 + √4*5= 7√5+2√5= 9√5
b) √48 - √3= √3*16 -√3 = 4√3-√3= 3√3
c) √12 + √27= √4*3 +√3*9= 2√3 + 3√3=5√3
d) √45 - √125= √5*9 - √5*25 = 3√5 - 5√5= -2√5
a) 7√5 + √20= 7√5+√4x5=7√5+2√5=9√5
b) √48 - √3=√16x3-√3=4√3-√3=3√3
c)√12+√27=√4x3+√9x3=2√3+3√3=5√3
d)√45-√125=√9x5-√25x5=3√5-5√5=-2√5