80. You have to multiply 16 by 5.
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16x = 4 Divide both sides by '16' Hence 16x/16 = 4/16 x = 4 / 16 x = 1/4
In the absence of signs I have assumed the term in 16x and 60 are negative: ie x2 - 16x = -60 or x2 - 16x + 60 = 0 Factors of 60 which total -16 are -6 and -10, so (x - 6)(x - 10)
To simplify the expression 16x - 8 - 5 - 6x - 4, first combine like terms. Combine the x terms by subtracting 6x from 16x to get 10x. Then, combine the constants by adding -8, -5, and -4 to get -17. Therefore, the simplified expression is 10x - 17.
X2 - 16X + 15 = 0 (X - 1)(X - 15) = 0 So X -1 = 0 or X - 15 = 0 ie X = 1 or X = 15
Oh, dude, you've thrown me back to high school math class with that one. So, X2 - 16x + 28 is a quadratic expression that can be factored as (X - 14)(X - 2). That's like the math version of solving a puzzle, but like, who even uses this stuff in real life, am I right?