9 squared is 81 and 16 squared is 256
-9 squared = 81(-9)^2 = (-9) * (-9) = 81
9 squared (or 92) = 9 x 9
This is equivalent to (x + 3)2 = (x + 2)2 + 9. Multiplied out this is x2 + 6x + 9 = x2 + 4x + 4 + 9. Deduct x2 + 4x + 9 from each side giving 2x = 4 So x = 2 Check: (2 + 3) squared = 25 which is 9 more than (2 + 2) squared = 16.
9 feet squared = 9 ft x 9 ft = 108 inches x 108 inches = 108 inches squared [= 11664 square inches]. NB: 9 feet squared is NOT 9 square feet.
x^2 +8x -9 is equivalent to (x+9)(x-1) when factored
9 squared is 81 and 16 squared is 256
lokiya said: 9 squared is equal to 81
6 squared plus 9 squared is equal to 117.
When you square a number, you multiply it by itself. So, 9 squared means 9 multiplied by 9, which equals 81. In mathematical notation, 9 squared is written as 9^2 or 9 x 9.
-9 squared = 81(-9)^2 = (-9) * (-9) = 81
9 squared (or 92) = 9 x 9
This is equivalent to (x + 3)2 = (x + 2)2 + 9. Multiplied out this is x2 + 6x + 9 = x2 + 4x + 4 + 9. Deduct x2 + 4x + 9 from each side giving 2x = 4 So x = 2 Check: (2 + 3) squared = 25 which is 9 more than (2 + 2) squared = 16.
9 feet squared = 9 ft x 9 ft = 108 inches x 108 inches = 108 inches squared [= 11664 square inches]. NB: 9 feet squared is NOT 9 square feet.
92 = 9 x 9 = 81
3 squared is equal to 9
x=9 squared