5a x a = 5a2
(5a)^2 or a^2+10a+25
what is 5a x 3 x 2b
5a^(3) if the x means multiplication. 5a^(3)x^(3) if the x is a variable.
5a or 4a squared
5a + 4b - 3a =(5a - 3a) + 4b =2a + 4b =2 (a + 2b)
25a
The answer depends upon what the "x" here means. x is commonly used in algebra to denote a variable. However "x" is also a symbol used to mean multiplication. If the first then 5xa means 5 multiplied by x multiplied by a. If the second then 5xa means 5 multiplied by a. This is usually written simply as 5a.
Since they are like terms, 5a*3a=15a. Find out what "a" is equal to and multiply it by 15. Then, and only then, will you get your answer.
5a times 3a minus 8a = (5*3)*a2 - 8a = 15a2 - 8a
3a2 - 16a + 5 = 3a2 - 15a - a + 5 = 3a(a -5) - 1(a -5) = (3a - 1)(a - 5)
Star 5A is 5.417 x 10^14 miles away from planet X. To convert this to light years, divide this distance by 5.88 x 10^14 miles per light year. This gives a distance of approximately 0.92 light years from planet X to star 5A.