Solve by back substitution. X = -2 x+y+z= -1 2x+ 2z = 0

Q: Find the roots of the quadratic equation x + 2x - 3 = 0.

A: We will find the root by two methods first by splitting the middle term and second by discriminant…

Q: Solve for x: V8x + 33 + 4 = 7

A:

Q: Find the quadratic equation if the roots are 3 and - 4.

A: Quadratic equation with roots a and b is x2-(sum of the roots)x + product of the roots =0…

Q: Solve by elimination

A:

Q: 6x3 - 19x² + 8x + 5 = 0.

A: What is Equation: An equation is a mathematical expression which on the left hand side contains a…

Q: Find all solutions of 62x-34y=16. with y20.

A:

Q: olve z2 -4z+

A: we have to solve the,  z2 -4z+29=0 compare with,  a=1 b=-4 and c=29

Q: Solve (-2 - 3)square + 4 3cube/2

A: First combine -2-3that is -5.And 3 cube= 27

Q: Solve and determine whether the equation 4x + 6 = 6(x + 1) – 2x

A: We have to solve the equation: 4x+6=6x+1-2x Solving given equation,…

Q: Allen works as a pest control technician. Let y represent his total pay (in dollars) for the month.…

A: Allen works as a pest control technician. Let y represent his total pay (in dollars) for the month.…

Q: Solve the difference equation 16yk+2 +8yk+1+Yk = 6 - 5k, Yo = 2, Y₁ = 3

A:

Q: Solve. /3 – x - 2а + 27 — — 3

A:

Q: Solve for x: 24 3x - 2 15 91

A:

Q: Vx2 + 8 V3x2 +4 5V5x +2 = 10 /5x +10 V6x + 4

A:

Q: 6x9y+ z = −12 2x - 3y z = −4 - -4 -8x + 12y = 16

A: On solving this we will get

Q: solve by using substitution or elimination  by addition.   3x-2y=5  -6x+4y=-10

A:

Q: Solve by substitution  4x+7y=-59

A: Given equations: 4x+7y=-59.......(1) 3x+y=-23..........(2) From the equation 1, 4x=-59-7y…

Q: -3x2+4x+5=2x Determine if x=-1 is the solution to this equation?

A: Calculation:The given equation is –x2+4x+5 = 2x.Substitute the value x = –1 in the above equation…

Q: What is the solution to the following equation? 2x2 3x + 2 0

A: We can find the answer as below.

Q: -3x-2y=-15 -4x+2y=36 Solve by elimination and write as ordered pairs

A:

Q: Multiply the 1st equation by 2 to make -10y. 2x - 5y = -12 3x + 10y = 50

A:

Q: If 4 is the root of the equation 2x²-yx-6 I. Determine the value of y ii. Find the second root

A: The given equation is:                     2x2-yx-6 = 0        & 4 is a root of the given…

Q: Solve for y 6x + 2y = - 8

A:

Q: Solve for the equation  x² + 15x – 36 =0

A: Given: x² + 15x – 36 =0

Q: Find Solution for 6=9-3e3m-7

A:

Q: -5x+3+2x=7x-8+9x, determine whether this equation has no solution

A: Explanation of the answer is as follows

Q: Solve for x in terms of the other letters. b+ 8 = 4ax - 3b

A:

Q: 5x + 32 = x2 +12

A:

Q: Solve −2x2 +3x − 9 = 0

A:

Q: solve by using substituion or elimation by addition -2x+3y=-4 12x-18y=25

A: Given equations are -2x+3y = -4    __(1) 12x-18y = 25   __(2)