Question

(65)²-(60)² = [ (55)²- (50)² ] × x then find the value of x​

Answer 1

refer the attachment dear

Answer 2

Step-by-step explanation:

${65}^{2} = 65 \times 65 = 4225 \\ \\ {60}^{2} = 60 \times 60 = 3600 \\ {65}^{2} - {60}^{2} = 4225 - 3600 = 625$

${55}^{2} = 55 \times 55 = 3025 \\ {50}^{2} = 2500 \\ {55}^{2} - {50}^{2} = 3025 - 2500 = 525$

$525 \times x = 625 \\ x = 625 \div 525 = 1.1904 \: which \: is \: rounded \: off \: to \: 1.20$