To solve this, first we calculate the exponents:
(2/5)^2 = (2^2)/(5^2) = 4/25(1/3)^2 = (1^2)/(3^2) = 1/9
Now, substitute these values back into the expression:
15(4/25) - 63(1/9)
Now simplify the multiplication:
= 15(4/25) - 63(1/9)= 60/25 - 63/9= 12/5 - 63/9
Now, find a common denominator to subtract the fractions:
= (129)/(59) - (635)/(95)= 108/45 - 315/45
Now, subtract the fractions:
= (108 - 315)/45= -207/45= -46
Therefore, 15(2/5)^2 - 63(1/3)^2 equals -46.
To solve this, first we calculate the exponents:
(2/5)^2 = (2^2)/(5^2) = 4/25
(1/3)^2 = (1^2)/(3^2) = 1/9
Now, substitute these values back into the expression:
15(4/25) - 63(1/9)
Now simplify the multiplication:
= 15(4/25) - 63(1/9)
= 60/25 - 63/9
= 12/5 - 63/9
Now, find a common denominator to subtract the fractions:
= (129)/(59) - (635)/(95)
= 108/45 - 315/45
Now, subtract the fractions:
= (108 - 315)/45
= -207/45
= -46
Therefore, 15(2/5)^2 - 63(1/3)^2 equals -46.