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Jessie
Mathematics
30 November, 02:17
Find the roots of the equation: y=4 (X+4) ^2 - 12
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Ingrid Jones
30 November, 02:46
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0=4 (x²+8x+16) - 12
0=4x²+32x+64-12
0=4x²+32x+52
0=x²+8x+13
D=b²-4ac
D=64-52=12
x = (-b-√D) / 2a
x = (-b+√D) / 2a
x = (-8-2√3) / 2 = (-2 (4+√3)) / 2 = - (4+√3)
AND
x = (-8+2√3) / 2=-2 (4-√3) / 2 = - (4-√3)
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