2.2.2 Squares, Square Roots, Cube and Cube Roots, PT3 Focus Practice
Question 6:
Complete the operation steps below by filling in the boxes using suitable numbers.
3√41727÷√1916=3√27÷√2516 =3÷54 =3×45 =
3√41727÷√1916=3√27÷√2516 =3÷54 =3×45 =
Solution:
3√41727÷√1916=3√12527÷√2516=53÷54=53×45=43
Question 7:
Complete the operation steps below by filling in the boxes using suitable numbers.
(√279−3√2764)2=(√9−3)2=(12)2=
Solution:
(√279−3√2764)2=(√259−34)2=(53−34)2=((5×4)−(3×3)12)2=(1112)2=121144
Question 8:
Complete the operation steps below by filling in the boxes using suitable numbers.
3√16164−0.32=3√64−0.32=4−=
3√16164−0.32=3√64−0.32=4−=
Solution:
Question 9:
Find the value of:
(a)3√1027−5(b)√449×3√−0.216
Solution:
(a)3√1027−5=3√10−13527=3√−12527=−53
(b)√449×3√−0.216=27×3√2161000=27×6510=635