Question

Berikut ini yang merupakan persamaan linear satu variabel adalah a. X+y=8 b. D2=81 c. 20-t=4 d. X2+5x+4=0

Answer 1

x = -4 or -1 for x² + 5x + 4 = 0

Step-by-step explanation:

x + y = 8

x    y

0   8

1    7

2    6

3     5

4      4

5      3

6     2

7     1

8     0

D² = 81

Taking square root both sides

=> D = ± 9

20 - t = 4

=> -t = 4 - 20

=> -t = -16

=> t = 16

x² + 5x + 4 = 0

x² + x + 4x + 4 = 0

=> x(x + 1) + 4(x + 1) =0

=> (x + 4)(x + 1) = 0

=> x = -4 or -1

Learn More:

Find Y÷y+1=5÷12.linear equation chapter. - Brainly.in

https://brainly.in/question/7915928

Draw the graph of each of the following linear equations in two ...

https://brainly.in/question/11768099

For the quadratic equation xsqure+10x-7=10 the value of a, b, c are ...

https://brainly.in/question/11364243