2.
pa
Php600 more than the cost of the blouse.
3. A motorcycle driver travels 15 kph faster than a bicycle rider. The motorcycle driver covers
60 km in two hours less than the time it takes the
bicycle rider to travel the same distance.
4. A realty developer sells residential lots for Php4,000 per square meter plus a
processing
fee
of Php25,000. One of the lots the realty developer is selling
costs Php625,000.
5. A garden 7 m by 12 m will be expanded by planting a border of flowers. The border will be
of the same width around the entire garden and has
an area of 92 m².
Did you find the activity challenging? Were you able to represent each situation by a
mathematical statement? For sure you were able to identify the situations
that can be
represented by quadratic equations. In the next activity, you will write quadratic
equations
in standard form.
➤ Activity 6: Set Me to Your Standard!
Write each quadratic equation in standard form, ax² + bx + c = 0 then identify the values of a,
b, and c. Answer the questions that follow.
1. 3x-2x=7
2. 5-2x=6x
3. (x+3)(x+4)= 0
4. (2x+7)(x-1) = 0
5. 2x(x-3)=15
Questions:
6. (x+7)(x-7)=-3x
7. (x-4)²+8=0
8. (x+2)=3(x+2)
9. (2x-1)=(x + 1)²
10. 2x(x+4)=(x-3)(x-3)
​