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(3x - 4)(2x^2 + 6x + 5)
2(x + 2)(x - 2)(x2 + 2x + 4)(x2 - 2x + 4)
Using the distributive property of multiplication over addition, 2*[2 - 2] = 2*[2 + (-2)] = 2*2 + 2*(-2)LHS = 2*0 = 0RHS = 4 + 2*(-2)Therefore 2*(-2) = -4 and, by commutativity, -2*2 = -4Next-2*[2 - 2] = -2*[2 + (-2)] = -2*2 + -2*(-2)LHS = -2*0 = 0RHS = -4 + -2*(-2)Therefore -2 times -2 = +4
k = 7 x^4 - 5x^3 + 7x^2 + 3x - 10 = (x + 1)(x - 2)(x^2 - 4x + 5)
Two thirds minus two ninths is 4 ninths. Two thirds is 6 ninths. 6 ninths minus 2 ninths is 4 ninths.
(4*12) minus (9*12) = -60
2/9 minus 2/3 is -4/9
It is: 2/3 minus 2/9 = 4/9
Expressed as a proper fraction in its simplest form, 4/9 - 2/3 = -2/9 or minus two ninths.
Firstly, do 11 minus 4 = 7. So, now we have 7 and two ninths, minus five ninths. Much easier, 6 and 6 ninths.
1 third = 3 ninths, 3 ninths - 2 ninths = 1 ninth.
To subtract two fractions, they must have a common denominator. In this case, the common denominator is 9. So, convert 2/3 to 6/9. Then, subtract 6/9 - 4/9 to get 2/9 as the result.
three fourths
It is: 12 and 4/9 minus 1 and 2/3 = 10 and 7/9
4/12 - 2/9 = 1/9 or one ninth.
7/12 minus 1/3 is 1/4.