1) x^2 - y^2 = x+yx + yx+yx−yx - yx−y 2) c^-25 = c(−12.5)+c(−12.5)c^(-12.5) + c^(-12.5)c(−12.5)+c(−12.5)c(−12.5)−c(−12.5)c^(-12.5) - c^(-12.5)c(−12.5)−c(−12.5) 3) 25 - a^2 = 5+a5 + a5+a5−a5 - a5−a 4) m^2 - n^2 = m+nm + nm+nm−nm - nm−n 5) b^2 - 0.04 = b+0.2b + 0.2b+0.2b−0.2b - 0.2b−0.2 6) n^2 - 4/9 = n+2/3n + 2/3n+2/3n−2/3n - 2/3n−2/3 7) 100 - p^2 = 10+p10 + p10+p10−p10 - p10−p 8) a^2 - 1 = a+1a + 1a+1a−1a - 1a−1 9) 49 - b^2 = 7+b7 + b7+b7−b7 - b7−b 10) m^2 - 400 = m+20m + 20m+20m−20m - 20m−20 11) 1.21 - x^2 = 1.1+x1.1 + x1.1+x1.1−x1.1 - x1.1−x 12) 25/64 - p^2 = 5/8+p5/8 + p5/8+p5/8−p5/8 - p5/8−p
1) x^2 - y^2 = x+yx + yx+yx−yx - yx−y 2) c^-25 = c(−12.5)+c(−12.5)c^(-12.5) + c^(-12.5)c(−12.5)+c(−12.5)c(−12.5)−c(−12.5)c^(-12.5) - c^(-12.5)c(−12.5)−c(−12.5) 3) 25 - a^2 = 5+a5 + a5+a5−a5 - a5−a 4) m^2 - n^2 = m+nm + nm+nm−nm - nm−n 5) b^2 - 0.04 = b+0.2b + 0.2b+0.2b−0.2b - 0.2b−0.2 6) n^2 - 4/9 = n+2/3n + 2/3n+2/3n−2/3n - 2/3n−2/3 7) 100 - p^2 = 10+p10 + p10+p10−p10 - p10−p 8) a^2 - 1 = a+1a + 1a+1a−1a - 1a−1 9) 49 - b^2 = 7+b7 + b7+b7−b7 - b7−b 10) m^2 - 400 = m+20m + 20m+20m−20m - 20m−20 11) 1.21 - x^2 = 1.1+x1.1 + x1.1+x1.1−x1.1 - x1.1−x 12) 25/64 - p^2 = 5/8+p5/8 + p5/8+p5/8−p5/8 - p5/8−p