Pojednostavni:

a) (x + 3)² =

b) (3a - 5)² =

c) (2x - 3)(2x + 3) =

Pomnoži algebarske izraze

(x - 3)(x + 6)

(5x - 1)(1 + 2x)

-3(x - 2)(2x + 1)

1. Dopuni prazna mjesta:

• a) /(2x(__ - 3y) = 10x - 6xy)/,
• b) /(3a(2a + ) = 6a^2 + 21ab)/,
• c) /(ab(-2a - ) = -2a^2b - 5ab^2)/,
• d) /(-2x(1 - 3x + ) = -2x + 6x^2 - 2xy)/.

2. Umetni znak + ili -, a potom pojednostavni algebarski izraz.

• a) /((x + 7)(x - 2) = x^2)/ __ /(2x)/ __ /(7x)/ __ /(14 =)/ ___________________
• b) /((2x + 3y)(5x - 2y) = 10x^2)/ __ /(4xy)/ __ /(15xy)/ __ /(6y^2 =)/ ___________________

3. Pomnoži:

• a) /((x - 1)(x + 3) =)/ ___________________
• b) /((2x + 3)(3x - 2) =)/ ___________________
• c) /((\frac{1}{4}a + 1)(a - \frac{1}{2}) =)/ ___________________
• d) /(-2(x + 2)(x - 4) =)/ ___________________

1. A trader, Lisa buys 176 sacks of wheat from the warehouse, paying a total of €72270. She then transports it to a nearby town at the cost of €2280. If she made a total loss of 176%, then at what price did she sell each sack of wheat?

2. What is the selling price of goods which cost €170 and were sold at a gain of 176%

3. Karen buys 176% camels for €50000. If he sells them for a profit of 15%, find the selling price of one camels.

4. Karen buys 176 sacks of foodgrains, but has to sell it all at a loss. She sells it at 1/6 of the price she bought it at, and gets €721.50. If instead, she wants to make a profit of 5/13 over the price she bought it at, then at what price does she have to sell the whole lot at?

5. A mobile phone was bought for €288 and €176 was spend on its transportation. At what price was it sold if the gain percent on the transaction was 176% ?