rules
What rule derives from the first principle of equivalence: “if you add or subtract the same numbers from the two members, the solution will be the same”?
The transport rule
3 + 2x = 13
x = 5
2x - 2y
2(x - y)
I earn 4.000 gross euro, the goverment takes the 38% of my salary every month. How much do I earn net yearly? (without other acquisitions)
18.240 euro
What does the first congruence postulate?
Two triangoles are congruent if they have the two sides and angle between them congruent
2 + 3x = 2x + 1
x = -1
16g2 - 1
(4g + 1)(4g - 1)
Does the negative greek py belong to the “Z” numbers?
No
What‘s equale to the median in a isosceles triangle?
The height and the bisector
2a + 3 = 1/2a - 1
tips use a piece of paper
a = - 8/3
2xy4 - 8y2x + 4y4 - 16y2
tips use a piece of paper
(2y2(x + 2))(y - 2)(y + 2)
What does “Q“ mean in a set?
Rational number
How can you factorise the subtraction between two cubes? (A3 - B3)
(A - B)(A2 + AB + B2)
x (x + 7) + 9 = x + (x + 3)2
tips use a piece of paper
0x = 0 (undeterminated)
3a3 - 18a2b + 27ab2
tips use a piece of paper
3a(a - 3b)2
What do you mean for “C.E.“ in an algebric fraction?
Find the value for the variable which canceles the denominator
What is definition of the polynomial zero?
The polynomial zero it is a number, which makes the polynomial null
(5x/4 - 11/4) - (5x/16 + 3/16) = (50/8 - 3x/8)
tips use a piece of paper
x = 7
t4 - 4t2 - 77
(t2 - 11)(t2 + 7)
(2 + x + 3x2 + x3) : (2 + x2)
Q = x + 3
R = - x + 4