Question

(2x+3)²+x²=144
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Answer 1

Answer:

x=−6/5+3/5√79 or x=−6/5−3/5√79

Step-by-step explanation:

Let's solve your equation step-by-step.

(2x+3)2+x2=144

Step 1: Simplify both sides of the equation.

5x2+12x+9=144

Step 2: Subtract 144 from both sides.

5x2+12x+9−144=144−144

5x2+12x−135=0

For this equation: a=5, b=12, c=-135

5x2+12x+−135=0

Step 3: Use quadratic formula with a=5, b=12, c=-135.

x=−b±√b2−4ac/2a

x=−(12)±√(12)2−4(5)(−135)/2(5)

x=−12±√2844/10

x=−6/5+3/5√79 or x=−6/5−3/5√79

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Answer 2

Answer:

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Step-by-step explanation:

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