Solve the following Quadratic Equations by using the Quadratic Formula. Show your complete solutions.
1. x² - 12x + 35 = 0
2. r² +4r-5=0
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Solve the following Quadratic Equations by using the Quadratic Formula. Show your complete solutions.
1. x² - 12x + 35 = 0
2. r² +4r-5=0
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Answer:
1. x 2-12x+35=0
x 2-7x-5x+35=0
x(x-7)-5(x-7)=0
(x-5)(x-7)=0
x=5,7
2. r² +4r-5=0
r² +5r-r-5=0
r(r+5)-1(r+5)=0
(r-1)(r+5)=0
r=1,5
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Step-by-step explanation:
Answer:
1. x 2-12x+35=0
x 2-7x-5x+35=0
x(x-7)-5(x-7)=0
(x-5)(x-7)=0
x=5,7
2. r² +4r-5=0
r² +5r-r-5=0
r(r+5)-1(r+5)=0
(r-1)(r+5)=0
r=1,5