Find the Value of 5x + 3y − 6z, When X = 3, Y = 5 and Z = 4

Find the value of 5x + 3y − 6z, when x = 3, y = 5 and z = 4

Sum

5x + 3y − 6z

= 5 × 3 + 3 × 5 − 6 × 4

= 15 + 15 − 24

= 30 − 24

= 6

shaalaa.com

Is there an error in this question or solution?

Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.

xy − bd = ..............

Show that the value of x³ – 8x² + 12x – 5 is zero, when x = 1.

Simplify:

`5"x"^2-(3"x"-overline("x"^2-4))`

Fill in the blank:

3x − z + y = 3x − (..............)

If x = 3, y = 2 and z = 1; find the value of xy + y²z – 4zx

If P = − 12x² – 10xy + 5y², Q = 7x² + 6xy + 2y², and R = 5x² + 2xy + 4y²; find P + Q + R

Multiply and then evaluate:

(x² – y) and (xy – y²); when x = 1 and y = 2.

Multiply and then evaluate:

(x – 2y + z) and (x – 3z); when x = − 2, y = − 1 and z = 1.

Simplify:

6 {3x – 8 (5x – 10)}

Simplify:

2 (3x² – 4x – 8) – (3 – 5x – 2x²)