Divide by 16, which gives you x=4/16 The 4/16 cancels down to 1/4.
4x - 20 = -44x = 16x = 4
16x - 2y = 74 (Eq 1) 2x - 2y = 4 (Eq 2) from Eq 2, 2y = 2x - 4 Substitute in Eq 1 16x - (2x - 4) =74 ie 16x - 2x + 4 = 74 ie 14x = 70 ie x = 5 2y = 2x - 4 = 10 - 4 = 6 y =3 Check 16 x 5 - 2 x 3 = 80 - 6 = 84 QED
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)
X2 - 16X + 15 = 0 (X - 1)(X - 15) = 0 So X -1 = 0 or X - 15 = 0 ie X = 1 or X = 15
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Divide by 16, which gives you x=4/16 The 4/16 cancels down to 1/4.
4x - 20 = -44x = 16x = 4
If: 16x-15-6x = 13 Then: 10x = 28 And: x = 2.8.
x=2.52
x3 + 4x2 - 16x - 64 = (x + 4)(x + 4)(x - 4).
x2 - 16x + 68 = 5 (x - 8)2 + 4 = 5 (x - 8)2 = 1 x - 8 = 1 or -1 x = 9 or 7
√(16x) = 4√x = 4x1/2
7.5625
If your function is 4x^2+16x+16=0 then x=-2, if it is 4x^2-16x+16=0, then x=2
x2+16x-80 = 0 (x-4)(x+20) = 0 x = 4 or x = -20
16X - 2Y = 4- 2Y = - 16X + 4Y = 8X - 2---------------m(slope) = 8===========