Question

Помогите пожалуйста.

Answer 1

Ответ:

${(9x - 5)}^{2} - {(x - 11)}^{2} = 0 \\ (9x - 5 - x + 11)(9x - 5 + x - 11) = 0 \\ (8x + 6)(10x - 16) = 0 \\ x1 = - 0.75 \\ x2 = 1.6$

Answer 2

Ответ:

(9х-5)²- (х-11)² =0

81х²-90х+25-(х²-22х+121)=0

81х²-90х+25-х²+22х-121=0

80х²-68х-96=0

20х²-17х-24=0

20х²+15х-32х-24=0

5х(4х+3)-8(4х+3)=0

(4х+3)(5х-8)=0

4х+3=0

5х-8=0

Х1= -¾

Х2= 8/5

Х1= -0,75

Х2= 1,6