Since 5x + 20 is a multiple of x + 4, it is automatically the LCD of this problem.
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x - 4. x^2 + 5x - 36 = (x - 4) (x + 9) x^2 - 9x + 20 = (x - 4) (x - 5)
Lcd of 5,4,2 is 20 because 5*4=20 and 2*10=20
As written, -5x + 9x = 4x 4x - 4 = 4(x - 1) If that's -5x2 + 9x - 4, that factors to -(x - 1)(5x - 4)
If that's 15x2, the answer is (3x + 4)(5x - 4)
Let's see. 4X - 5Y = - 20 - 5Y = - 4X - 20 Y = 4/5X + 20 slope(m) = 4/5 Is positive