Year 9 Maths
Introduction to Quadratic Equations and Graphs
Solving ax^2+bx=0 and x^2=d
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Questions
Question 1
205534
Mia solves \(x^2 = 49\) and writes \(x = 7\). Which statement is correct?
right - \(x\) cannot be negative
wrong - the solution is \(x = 49\)
wrong - \((-7)^2 = 49\) as well, so \(x = \pm 7\)
wrong - the solutions are \(x = \pm 24.5\)
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