Q2 of 34 Page 178

In each of the following equations, take x as the given numbers and compute the numbers y.

y = x2 + 5x + 4, x = –2, x = –3

y = x2 + 5x + 4, x = –2, x = –3

When x = -2,


y = (-2)2 + 5×-2 + 4


= 4-10 + 4


= -2


When x = -3,


y = (-3)2 + 5×-3 + 4


= 9-15 + 4


= -2


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