Question

X^2 + bx - 4 = 0? What is b equal to?

Answer 1

$\mathfrak{ x ^ { 2 } + b x - 4 = 0}$

$\mathfrak{bx-4=-x^{2} }$

$\mathfrak{bx=-x^{2}+4 }$

$\mathfrak{xb=4-x^{2} }$

$\mathfrak{\frac{xb}{x}=\frac{4-x^{2}}{x} }$

$\mathfrak{ b=\frac{4-x^{2}}{x} }$

$\mathfrak{b=-x+\frac{4}{x} }$

AnSwEr

$\boxed{\mathfrak{b=-x+\frac{4}{x},x\neq 0 } }$

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