When you multiply 13 by 64 you will get 832. You may need a calculator or a mathematical table to perform this operation. You may also use an online calculator to perform this task
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1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 208, 416, 832:1 x 832, 2 x 416, 4 x 208, 8 x 104, 13 x 64, 16 x 52, 26 x 32
x2 - 10x + 25 = 64 Or x2 - 10x + 25 = 64? If the first, move all over to 1 side; x2 - 10x + 25 - 64 = 0 x2 - 10x + -39 = 0 Then make it into quadratic equations; (x - 13)(x + 3) = 0 Therefore x = 13 or x = -3. If the second, 8x = -39 -39/8 = -9.75 = x
13
Equation: 8x^2 -26x +15 =0 I Divide all terms by 8: x^2 -26/8 +15/8 = 0 and complete the square as follows:- (x -13/8)^2 -169/64 +15/8 = 0 => (x-13/8)^2 = 49/64 Square root both sides: x-13/8 = -/+ 7/8 Add 13/8 to both sides: x = 13/8 -/+ 7/8 Therefore solutions are: x = 5/2 or x = 3/4
64 = 1 x 64, 2 x 32, 4 x 16, 8 x 8, 16 x 4, 32 x 2, 64 x 1.