(3) (2x + 3)2 = 25
solve the following quadratic equation
Answers
Answered by
1
Answer:
x=4.75
Step-by-step explanation:
sorry do u really need it?
Answered by
12
Step-by-step explanation:
Given quadratic equation is (2x+3)²=25
=>(2x)²+2(2x)(3)+(3)²=25
((a+b)²=a²+2ab+b²)
=>4x²+12x+9=25
=>4x²+12x+9-25=0
=>4x²+12x-16=0
=>4(x²+3x-4)=0
=>x²+3x-4=0
=>x²+x-4x-4=0
=>x(x+1)-4(x+1)=0
=>(x+1)(x-4)=0
=>x+1 =0 (or) x-4=0
=>X=-1 and 4
The solution is -1 and 4
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