Расчет: ztmfAZ - 1

a* x^²+ b* x+c =
a* (x-x1)* (x-x2)

a* x^²+ b* x+c = a* (x-x1)* (x-x2) $a\cdot x^{2}+b\cdot x+c$ = $a\cdot (x-x1)\cdot (x-x2)$

a* x^²- a* (x-x1)* (x-x2) = - b* x-c $a\cdot x^{2}-a\cdot (x-x1)\cdot (x-x2)$ = $-b\cdot x-c$

x* x2* a+ x1* x* a- x1* x2* a = - b* x-c $x\cdot x2\cdot a+x1\cdot x\cdot a-x1\cdot x2\cdot a$ = $-b\cdot x-c$

a* ( x* x2+ x1* x- x1* x2) = - b* x-c $a\cdot (x\cdot x2+x1\cdot x-x1\cdot x2)$ = $-b\cdot x-c$

a =

(- b* x-c)

/ ( x* x2+ x1* x- x1* x2)

$a$ = $\frac{-b\cdot x-c}{x\cdot x2+x1\cdot x-x1\cdot x2}$

a =

(- b* x-c)

/ ( x* x2+ x* x1- x1* x2)

$a$ = $\frac{-b\cdot x-c}{x\cdot x2+x\cdot x1-x1\cdot x2}$

a = -

b* x

/ ( x* x2+ x* x1- x1* x2)

$a$ = $-\frac{b\cdot x}{x\cdot x2+x\cdot x1-x1\cdot x2}-\frac{c}{x\cdot x2+x\cdot x1-x1\cdot x2}$