Graph each quadratic function

Y=x to the power of 2+4x-4

Y=x to the power of 2+4x-4

Does this help? Or does it need to be more specific?

Y = x² + 4x - 4

x² + 4x - 4 = 0

x = -(4) +/- √((4)² - 4(1)(-4))

2(1)

x = -4 +/- √(16 + 16)

2

x = -4 +/- √(32)

2

x = -4 +/- 4√(2)

2

x = -2 + 2√(2)

x = -2 + 2√(2) x = -2 - 2√(2)

y = x² + 4x - 4

y = (-2 + 2√(2))² + 4(-2 + 2√(2)) - 4

y = (4 - 4√(2) + 8) + (-8 + 8√(2)) - 4

y = 4 + 8 - 8 - 4 - 4√(2) + 8√(2)

y = 4√(2)

(x, y) = (-2 + 2√(2), 4√(2))

or

y = x² + 4x - 4

y = (-2 - 2√(2))² + 4(-2 - 2√(2)) - 4

y = (4 + 4√(2) + 8) + (-8 - 8√(2)) - 4

y = 4 + 8 - 8 - 4 + 4√(2) - 8√(2)

y = -4√(2)

(x, y) = (-2 - 2√(2),4√(2))

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