Kvadratne jednadžbe posebnih oblika

Authored by Lea Božić

Mathematics

KG - 10th Grade

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7 questions

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FILL IN THE BLANKS QUESTION

1 min • 5 pts

Rješenja kvadratne jednadžbe $9x^2=81x$ su:

(a)

FILL IN THE BLANKS QUESTION

1 min • 5 pts

Rješenja kvadratne jednadžbe $x^2+81=0$ su:

(a)

FILL IN THE BLANKS QUESTION

1 min • 5 pts

Ako je $x_1=-2$ jedno rješenje kvadratne jednadžbe $x^2=-bx$ , koliko je b?

(a)

FILL IN THE BLANKS QUESTION

1 min • 5 pts

Ako je $\left(a-5\right)^2=25$ , koliko je a?

(a)

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Broj 1 je rješenje jednadžbe $\left(x+1\right)\left(x-5\right)=0$

Točno

Netočno

FILL IN THE BLANKS QUESTION

1 min • 5 pts

Broj $i=\sqrt[]{-1}$ nazivamo:

(a)

FILL IN THE BLANKS QUESTION

1 min • 5 pts

Ako je -5 jedno rješenje jednadžbe $ax^2+c=0$ tada je drugo rješenje

(a)

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Kvadratne jednadžbe posebnih oblika

Rješenja kvadratne jednadžbe 9x2=81x9x^2=81x9x2=81x su: (a)

Rješenja kvadratne jednadžbe x2+81=0x^2+81=0x2+81=0 su: (a)

Ako je x1=−2x_1=-2x1​=−2 jedno rješenje kvadratne jednadžbe x2=−bxx^2=-bxx2=−bx , koliko je b? (a)

Ako je (a−5)2=25\left(a-5\right)^2=25(a−5)2=25 , koliko je a? (a)

Broj 1 je rješenje jednadžbe (x+1)(x−5)=0\left(x+1\right)\left(x-5\right)=0(x+1)(x−5)=0

Broj i=−1i=\sqrt[]{-1}i=−1​ nazivamo: (a)

Ako je -5 jedno rješenje jednadžbe ax2+c=0ax^2+c=0ax2+c=0 tada je drugo rješenje (a)

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Similar Resources on Wayground

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Discover more resources for Mathematics

Rješenja kvadratne jednadžbe $9x^2=81x$ su:

(a)

Rješenja kvadratne jednadžbe $x^2+81=0$ su:

(a)

Ako je $x_1=-2$ jedno rješenje kvadratne jednadžbe $x^2=-bx$ , koliko je b?

(a)

Ako je $\left(a-5\right)^2=25$ , koliko je a?

(a)

Broj 1 je rješenje jednadžbe $\left(x+1\right)\left(x-5\right)=0$

Broj $i=\sqrt[]{-1}$ nazivamo:

(a)

Ako je -5 jedno rješenje jednadžbe $ax^2+c=0$ tada je drugo rješenje

(a)