Draw the graph of y= $x^{2}$ +x and hence solve $x^{2}$ +1=0.

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(1) Draw the graph of y = x² and y = 2x + 3 and hence solve the equation x² − 2x − 3 = 0.

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Draw the graph of $y = x^{2} - x - 8$ and hence, solve the equation $x^{2} - 2 x - 15 = 0$

y = x^{2} + 3 x - 4

x^{2} + 3 x - 4 = 0

[5]

D r a w t h e g r a p h o f y = x^{2} + 3 x - 4 a n d h e n c e s o l v e x^{2} + 3 x - 4 = 0 .

y = x^{2}

y = 2 + x

x^{2} - x - 2 = 0

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