3x + 2 = 82
Yes. Matrix addition is commutative.
it equals LxL+WxW
(5, 1)
(2, 1)
(6, -4)
4x2yz + 2xy2z + 2xyz = 2xyz(2x + y + 1) Not sure what check mentally entails.
It is a singular matrix.
It is a singular matrix.
2xy + 6 = 4xyz Divide through by 2: xy + 3 = 2xyz 3 = 2xyz - xy = y*(2xz - x) Therefore, y = 3/(2xz - x) provided that 2xz - x is not zero.
I used the matrix method to find the answer: x=4, y=-7, z=-5.
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All the time
One way to solve this system of equations is by using matrices. Form an augmented matrix in which the first 2x2 matrix is the coefficient matrix and the 2x1 matrix on its right is the answer. Now apply Gaussian Elimination and back-substitution. Using this method gives x=5 and y=1.
Yes. Matrix addition is commutative.
2048
42
4+1=5. Plus 4 equals 9. Plus 77685769844446473 equals 77685769844446482. Plus 3 equals 77685769844446485. Plus 8 equals 77685769844446493. Plus 1 equals 77685769844446494. Plus 9870998342523322424 equals 1064785604097768918. Plus 4 equals 1064785604097768922.