THE STORY LOVE SMART GIRL
6
"Mr will tell you one thing. And who can do it faster and more thoroughly you will give poon for all of you ok" said the gury sir while carrying a book to find a problem.
After the child understood what the teacher meant Aiko saw Yuta's slightly pale face Aiko asked while agitated "Yuta you are why you are sick, are you groggy when you are told about the same teacher Yuta."
Not long after Aiko saw Yuta's trembling hands did not stop stopping while held by Aiko. Aiko told Mr. Rudi "Pak Rudi Yuta is sick sir because he seems to be not feeling well until his hands tremble sir from earlier."
"ok Yuta you can sit on your stool because later what will happen if your father loves you eucalyptus oil to warm your body."
After Yuta sat on his lap he smiled at Aiko because he had seen her sick condition earlier, Aiko also returned with that smile to Yuta.
Finally, Mr. Rudi has prepared the problem there are 4 and this is the problem
1. From the graph, the peak or turning point of a quadratic function is known, namely at the point (2, 1). In addition, it is also known that 1 arbitrary point is (1, 2). Try to formulate the quadratic function!
2. Solve the following quadratic equation by way of factorization 5x2+13x+6\=0
3. Complete the perfect square shape below:
x2 + 6x + 5 \= 0
4. Here use abc formula!
x2 + 4x - 12 \= 0
Answer:
1. Known from this:
(xp, yp) \= (2, 1)
Any point \= (1, 2)
Well, according to the explanation earlier, if on the graph known peak points (xp, yp) and 1 point just any, then we use the formula:
y \= a(x - xp)2 + yp
Yuk, let's try to elaborate!
y \= a(x - xp)2 + yp
2 \= a(1 - 2)2 + 1
2 \= a(-1)2 + 1
2 \= a(1) + 1
2 \= a + 1
a \= 2 - 1
a \= 1
Since the peak point is at (2, 1) and the value a \= 1, then the square function:
y \= a(x - xp)2 + yp
y \= 1(x - 2)2 + 1
y \= x2 - 4x + 4 + 1
y \= x2 - 4x + 5
Answer:
2. 5x² + 13x \= 60\=0
5x² + 10x +3x+6\=0
5x(x+2) + 3 (x+2)\=0
(5x+3) (x+2)\= 0
5x\=-3
X \= -3/5 or x\= -2
x2 + 6x +5 \= 0
Convert to x2 + 6x \= -5
Add one number in the left and right fields to make it a perfect square. The addition of this number is taken from half the number of coefficients of x or half of 6 squared, which is 32\=9. Add the number 9 in the left and right fields, so the equation becomes:
x2 + 6x + 9 \= -5 + 9
x2 + 6x + 9 \= 4
(x+3)2 \= 4
(x+3) \= √4
x \= 3 ± 2
x \= 2-3
x \= -1
x \= -2-3
x \= -5
So, x\= -1 or x \= -5
here's the abc formula!
x2 + 4x - 12 \= 0
a\=1, b\=4, c\=-12.
After his teacher saw the work of Aiko, Jeno, Sohyun, and Dave, and Mr. Rudi was amazed to see the results of Aiko, Jeno, and Sohyun.
And it turns out that having Dave is the wrong answer and Mr. Rudi has already
finish the answer Dave.
The 3rd child gets points from Mr. Rudi equally fast and meticulous, now the 3rd child is welcome to sit on their respective benches.
Don't forget the votes below thank you
