exam Maths Puzzle Numerical Ability

Is it possible to have squares of any integer to be a negative one?
Say x^2= -1 or -4?

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exam Other Question

Write the equation of the line that passes through point (6, 7) with a slope of 0 use the given conditions to write an equation in the point-slope form and the slope-intercept form

slope = 8, passing through (4, -1)