Question 1

Herleid. $4a * 3b + 9a * 5b$

Accepted Answer

$57ab$

Answer

$12ab + 45ab$

Answer

$12a^2b^2+ 45a^2b^2$

Answer

$57a^2b^2$

Question 2

Herleid. $8a * 7a - 4 * 5a$

Accepted Answer

$56a^2-20a$

Answer

$36a$

Answer

$36a$

Answer

$36a^2$

Question 3

Herleid. $2a*3a + 5a * -4a$

Accepted Answer

$-14a^2$

Question 4

Herleid. $-5(2a-3) + 7a$

Accepted Answer

$-3a+15$

Question 5

Herleid. $5-2(3a-6)$

Accepted Answer

$-6a+17$

Question 6

Herleid. $(2x-3)(5x+1)$

Accepted Answer

$10x^2-13x-3$

Answer

$23x-3$

Answer

$10x-13x-3$

Answer

$7x-3$

Question 7

Bereken de oppervlakte van een rechthoek met zijden van $2a$ en $3b$.

Accepted Answer

$6ab$

Question 8

Bereken de omtrek van een rechthoek met zijden van $3b$ en $4c$

Accepted Answer

$6b+8c$

Question 9

Herleid. $(x-8)^2$

Accepted Answer

$x^2-16x+64$

Question 10

Herleid. $(x-3)^2+6x$

Accepted Answer

$x^2+9$

Question 11

Herleid. $3/4a + 5/4a$. (Breuken)

Accepted Answer

$4/a$

Answer

$8/4a$

Answer

$2/4a$

Answer

$2a$

Question 12

Herleid. $3/a + 5/b$

Accepted Answer

$(5a+3b)/ab$

Answer

$5a/a + 3b/b$

Answer

Geen antwoord mogelijk.

Answer

$8ab/ab$

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