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C an anyone solve this 3(2b + 3)2 = 36 and if so what is it
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C an anyone solve this 3(2b + 3)2 = 36 and if so what is it
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Feb 22, 2019
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C an anyone solve this 3(2b + 3)2 = 36
and if so what is it
Mathematics
high-school
Guigui
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Guigui
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Assuming it's linear:
3(2b+3)2 = 36
6(2b+3) = 36
12b + 18 = 36
12b = 18
b = 1.5
Assuming you meant to put the 2 as an exponent:
3(2b+3)² = 36
First do the exponent:
3(4b² + 12b + 9) = 36
Multiply it out:
12b² + 36b + 27 = 36
12b² + 36b - 9 = 0
Factor:
3(4b² + 12b - 3) = 0
Apply Quadratic Formula:
x = (-12 +- √(144 + 48)) / 8
x = (-12+√192) / 8 and x = (-12 - √192) / 8
This makes it so that the variable you're solving for = .232 and -3.232.
Tim Goodman
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Feb 24, 2019
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Tim Goodman
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Divide by 3 on both sides:
Square root both sides:
Take away 3 from both sides:
Divide by 2 on both sides:
Answer:
Brmore
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Feb 26, 2019
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Brmore
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