5x(6x+28)=-23 Help I don't understand

Mathematics

2 answers:

andre [41]3 years ago

4 0

Try using Socratic it’s amazing and soooo good

aksik [14]3 years ago

3 0

Answer:

Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula.

Exact Form:

x = − 70 ± √4210/30

Decimal Form:

x = −0.03

Step-by-step explanation:

5x(6x+28)=−23

Step 1: Simplify both sides of the equation.

30x2+140x=−23

Step 2: Subtract -23 from both sides.

30x2+140x−(−23)=−23−(−23)

30x2+140x+23=0

Step 3: Use quadratic formula with a=30, b=140, c=23.

x=−b±√b2−4ac/2a

x=−(140)±√(140)2−4(30)(23)/2(30)

x=−140±√16840/60

x=−7/3+1/30√4210 or x=−7/3+−1/30√4210

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Hope I helped.