Part 2 from my other worksheet!

Help me! I’ll mark you

Use FOIL to expand and simplify:

Triangle Tiger:

A = (2x + 6)(x - 4)

= 2x^2 -8x + 6x - 24

= 2x^2 - 2x - 24 ft^2 (N)

Anthony's Computer Monitor:

A = (x - 3)(2x + 1)

= 2x^2 + x - 6x - 3

= 2x^2 - 5x - 3 in^2 (I)

Art Class:

A = (x - 4)^2

= x^2 - 8x + 16 in^2 (O)

Easel:

A = [(2x - 5)(2x + 4)] / 2

= (4x^2 + 8x - 10x - 20) / 2

= (4x^2 - 2x - 20) / 2

= 2x^2 - x - 10 in^2 (E)

Four Square:

A = (x + 2)^2

= x^2 + 4x + 4 ft^2 (A)

i can you with this question sweetie!

step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.