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Gabrielapetroi
a fost răspuns

Calculati:
a)[tex]3 \frac{1}{2} [/tex]·[tex] \sqrt{0.0225} [/tex]-0.(6)·[tex] \sqrt{1.125*2} [/tex]+0.27·[tex] \sqrt{0.09} [/tex]
b)0.3·[tex] \sqrt{[0.8(3)]^{2} } [/tex]-0.24·[tex] \sqrt{14.0625} [/tex]+0.(3)·[tex] \sqrt{0.81} [/tex]
Va rog mult sa ma ajutati!!

Răspuns :

Renatemambouko
a)
3 1/2×√0,0225-0,(6)×√(1,125×2)+0,27×√0,09=
=7/2×0,15-6/9×√2,25+0,27×0,3=
=7/2×15/100-2/3×1,5+0,081=
=7/2×3/20-1+0,081=
=21/40-0.919=
=0,525-0.919=
=-0.394


b)
0,3×√[0,8(3)²-0,24×√14,0625+0,(3)×√0,81=
=1/3×0,8(3)-0,24×3,75+1/3×0,9=
=1/3×(83-8)/90-0,9+0,3=
=1/3×75/90-0,6=
=1/3×5/6-0,6=
=5/18-6/10=
=(25-54)/90=
=29/90=0,3(2)