80 pts!! Directions: Solve each quadratic equation below
1. x2 - 3x + 2 = 0
2. y2 - 7y + 6 = 0
3. z2 - 5z + 4 = 0
4. x2 - 8x + 16 = 0
5. c2 + 6c + 5 = 0
6. p2 - 8p + 12 = 0
7. m2 + 8m + 7 = 0
8. m2 + 10m + 9 = 0
9. r2 -12r + 35 = 0
10. x2 + 2x + 1 = 0
11. x2 + 8x + 15 = 0
12. y2 + 11y + 24 = 0
13. x2 - 4x - 5 = 0
14. x2 - 5x - 6 = 0
15. x2 - 2x - 35 = 0

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

area of rectangle a is 2 times that of rectangle b that means 2x+x =   36cm^2

3x = 36cm ^2

x = 36/3

x= 12cm^2

and 2x = 24cm^2

now side of square = are divided by sides = 36/4 = 6cm

that means length of rectangle a and b is 6cm too

now for rectangle a,

l*b = area

= 6*y=24

y=24/6 = 4

therefore dimensions of rectangle a are- length = 6cm, breadth = 4cm

and for rectangle b, length = 6cm and breadth = 6-4 = 2cm.

hope this .