Answer
x= 3 and 7
Step-by-step explanation:
√4x-3 - √2x-5=2
√4x-3=2+√2x-5
squaring both sides
(√4x-3)²=(2+√2x-5)²
4x-3=2²+2*2*(√2x-5)+(√2x-5)²
4x-3=4+4(√2x-5)+2x-5
4x-2x-3+5-4=4(√2x-5)
2x-2=4(√2x-5)
again squaring both sides
(2x-2)²=(4(√2x-5))²
(2x)²-2*2x*2+2²=16(2x-5)
4x²-8x+4=32x-80
4x²-8x-32x+4+80=0
4x²-40x+84=0
4(x²-10x+21)=0
x²-10x+21=0
x²-(7+3)x+21=0
x²-7x-3x+21=0
x(x-7)-3(x-7)=0
(x-7)(x-3)=0
now
x-7=0
x=7
x-3=0
x=3
Step-by-step explanation:
Answer:
I THINK the answer is 5, but I'm not sure. Hope it works!
Step-by-step explanation:
The sides of central angles will=always be congruent.
The sides of inscribed angles will=sometimes be congruent.
Using quadratic formula
x = [-18 +-sq root (324 -4 *3*15)] / 2*3
x = [-18 +-sq root (144)]/6
x1 = (-18 + 12) / 6 = -1
x2 = (-18 -12) / 6 = -30/6 = -5