x²-100=0 give me a solution
x²-3x-21=0 give me a solution
3s²+9s=0 give me a solution
4a²+12a+36=0 give me a solution
Grade 9 - simple question
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x²-100=0 give me a solution
x²-3x-21=0 give me a solution
3s²+9s=0 give me a solution
4a²+12a+36=0 give me a solution
Grade 9 - simple question
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Answer:
x² - 100 = 0
(x + 10)(x - 10) = 0
x + 10 = 0 or x - 10 = 0
x = -10 or x = 10
x² - 3x - 21 = 0
a = 1,b = -3,c = -21
x = - (-3) + √(-3)² - 4 × (-21)/2 or
x = - (-3) - √(-3)² - 4 × (-21)/2
x = 3 + √93/2 or x = 3 -√93/2
3s² + 9s = 0
s² = 3s = 0
s(s + 3) = 0
s + 3 = 0
s = 0 or s = -3
Step-by-step explanation:
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