Question

E) X2+8X+16=0
d) X2=12

Answer 1

e) x² + 8x + 16 = 0
Delta = (8)² - 4(1)(16)
Delta = 64 - 64
Delta = zero

X = (-8 +- 0) / 2
x' = (-8 + 0) / 2 = -8/2 = -4 
x" = (-8 + 0) / 2 = -8/2 = -4

f) x² = 12
x = $\sqrt{12}$
x = $\sqrt{2*2*3}$
x = $\sqrt{2^2 * 3}$
x = 2$\sqrt{3}$

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