Free Printable Kvadrat zbroja i razlike, razlika kvadrata

1.

Kvadrat razlike: $\left(x\ -7\right)^2\ jednak\ je$

a)

$x^2-49$

b)

$x^2-7x\ -49$

c)

$x^2-14x+49$

d)

$x^2+14x+49$

2.

Rješenje izraza 100 $x^2\ -\ 144$ je:

a)

$\left(10x-12\right)\left(10x\ +12\right)$

b)

(100x-12)(100x+12)

c)

$\left(100x\ -\ 144\right)^2$

d)

$-44x^2$

3.

Koja formula je točna ?

a)

$\left(a-b\right)^2=a^2+2ab-b^2$

b)

$\left(a-b\right)^2=\ a^2-ab+b^2$

c)

$\left(a-b\right)^2\ =\ a^2-\ b^2$

d)

$\left(a-b\right)^2=a^2-2ab+b^2$

4.

Koristeći formulu za kvadrat zbroja, rastavi $\left(5y+9\right)^2$

a)

$25y^2+9y+81$

b)

$25x^2+90y+81$

c)

$5x^2+90y+81$

d)

$25y^2+90y+81$

5.

Točno rješenje kvadrata razlike (2x-3)² je

a)

4x²-9

b)

4x²-12x+9

c)

4x²+12x-9

d)

4x²-12x+6

6.

Koliko je $\left(2a-3b\right)\ \left(2a+3b\right)\$ ?

a)

$4a^2-9b^2$

b)

$4a^2-6ab+9b^2$

c)

$4a^2-12ab+9b^2$

d)

$4a^2+9b^2$

7.

$\left(\frac{2}{3}x\ +a\right)^2$

a)

$\frac{4}{3}x^2+\frac{4}{3}xa+a^2$

b)

$\frac{4}{9}x+\frac{4}{3}xa+a^2$

c)

$\frac{4}{9}x^2+\frac{4}{3}x+a^2$

d)

$\frac{4}{9}x^2+\frac{4}{3}xa+a^2$

8.

Napiši u obliku kvadrata zbroja: $25a^2+10a+1$

a)

$\left(5+2a\right)^2$

b)

$\left(a+1\right)^2$

c)

$\left(5a+1\right)^2$

d)

$\left(5a+2\right)^2$

Kvadrat zbroja i razlike, razlika kvadrata

Total questions: 8

Worksheet time: 4mins

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