2x2 is 4, so if 4=8x then x=1/2. 1/2 times 8 is the same as 8 divided by 2 (8/2), which simplifies to 4/1, or 4. So x=1/2.
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2x2 = 8x x = 8x/2x x = 4 Check: 2(4)2 = 8(4) 2(16) = 32 32 = 32
x3 + 2x2 - 8x + 5 = 0 x(2x - 8) + 5 = 0
2x2 - 8x + 3 = 0 needs to be solved using the quadratic formula.x = (4 + sqrt(10))/2 or x = (4 - sqrt(10))/2
8x - 7.2Divide each side by 8:x = 0.9
Yes. 8x - 11 = 69 so 8x = 80 or x = 10.