Draw the graph of y= $x^{2}$ +3x+2 and hence solve $x^{2}$ +2x+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.

(2) Draw the graph of y = 2x²and y = 3 − x and hence solve the equation 2x² + x − 3 = 0.

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

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

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

[5]

y = x^{2}

y = x + 2

x^{2} - x - 2 = 0

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} + 3 x + 2

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

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