Activity A No.2 solution
(x+2)²=9
x
²+4x+4=9 → square the binomial
x
²+4x+-5=0 → transform into standard form
(5+x) (x-1) =0 → factor the left side
X+5=0, x-1=0 → zero-product property
X=-5, x=1 → solve for x
Check:
At x = 5
(-5+2)² ≅ 9
(-3)² ≅ 9
9 ≡ 9
At x =1
(1+2)² ≅ 9
(3)² ≅ 9
9 ≡ 9
Note: To answer Activity B (problem solving) please see the problem ion the introduction then use it as
your basis.
VII. EVALUATION
A. Solve each quadratic equation by factoring.
1. x²+10x+25=0
2. x²+3x+2=0
3. x²+5x+6=0
4. 5x²-30x=-25
5. 3x²-5x-12
B. Solve the problem.
1. The perimeter of a rectangle is 30 cm and its area is 5cm². Find the dimensions of the rectangle.
Share
Answer:
haha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrrhaha nob me go brrrrrrrr
Step-by-step explanation: