Quadratic Equation by Factoring.
pa help po, need po ng solution, salamat.
1. x² - 4x = 0
2. x² - 8x + 16 = 0
3. x² - 5x = 2x - 5x
4. 20x² - 9x = 20
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Quadratic Equation by Factoring.
pa help po, need po ng solution, salamat.
1. x² - 4x = 0
2. x² - 8x + 16 = 0
3. x² - 5x = 2x - 5x
4. 20x² - 9x = 20
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Answer:
1.
X(x-4)=0
X=0
X-4=0
X=0
X=4
So the answer is x sub 1 =0
x sub 2=4
2.
(x-4)²=0
x-4=0
x=4
So the answer is x=4
3.
Cancel equal terms so x²=2x
x²-2x=0
x(x-2)=0
x=0
x-2=0
So the answer is x sub 1 =0
x sub 2 =2
4.
20x²-9x-20=0
20x²+16x-25x-20=0
4x(5x+4)-5(5x+4)=0
(5x+4) (4x-5) =0
5x+4=0
4x-5=0
x=-4/5
x=5/4
So x sub 1=-4/5
x sub 2=5/4
Step-by-step explanation:
Yan na po lahat