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√(16x) = 4√x = 4x1/2
f(x) = -4x2 - 16x - 11 a = -4, b = -16, c = -11 x-coordinate of the vertex = -b/2a = -(-16)/2(-4) = 16/-8 = -2 y-coordinate = f(-2) = -4(-2)2 -16(-2) - 11 = -16 + 32 - 11 = 5 vertex is (-2, 5)
16x - 8x + 12 = 78 + 22 or simplified to (16x-8x=8x)(78+22=100) 8x + 12 = 100 Simplify some more (Subtract 12 from both sides) 8x = 88 Divide both sides by 8, and x = 11
16x/100 = 3564.28 Multiply both sides by 100: 16x = 356428 Divide both sides by 16: x = 22276.75
If your function is 4x^2+16x+16=0 then x=-2, if it is 4x^2-16x+16=0, then x=2