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Simplify: 3l^2mn+nl^2m−5mn^2l+l^2nm+2n^2ml−mn^2

mn(5l^2-3nl-n)
JL
Answered by John L. • Maths tutor
7106 Views

How can you solve an equation with unknowns in the denominators?

First, you should make it so that each fraction has a common denominator. This will usually be done by multiplying the numerator and the denominator of the fraction by the same expression (this is acceptable...
JR
Answered by Joshua R. • Maths tutor
3824 Views

ln(2x^2 + 9x – 5) = 1 + ln(x^2 + 2x – 15). Express x in terms of e

ln(2x 2 + 9x – 5) = 1 + ln(x 2 + 2x – 15)ln(2x 2 + 9x – 5) – ln(x 2 + 2x – 15)= 1 ln((2x 2 + 9x – 5)/(x 2 + 2x – 15)) = 1(2x 2 + 9x – 5)/(x 2 + 2x – 15) = e(2x – 1)(x + 5)/(x + 5)(x – 3) = e (2x – 1)/(x – 3)...
SF
Answered by Sylvain F. • Maths tutor
5108 Views

express (1+4(root7)) / (5+2(root7)) as a+b(root7), where a and b are integers

1+4(root7) x 5 - 2(root7) 5+2(root7) 5 - 2(root7) 5 - 2(root7) + 20(root7) - (8x7) 25 - (4x7) 5 +18(root7) - 56 -3 -51 + 18(root7) -317 - 6(root7)ie a = 17, b = -6
HB
Answered by Hannah B. • Maths tutor
4560 Views

express the number 84 as a product of its prime factors

84/2 = 4242/2 = 2121/3 = 77 /7 = 1therefore answer is 2x2x3x7
HB
Answered by Hannah B. • Maths tutor
9050 Views