Factorise each by first looking for a common factor and then completing the square.
a. 2x^2 + 4x - 4
b. 4x^2 - 8x - 20
c. 5x^2 + 30x + 5
d. 3x^2 - 12x - 39
e. 5x^2 - 30x + 10
f. 6x^2 + 24x - 6
g. 3x^2 + 30x + 39
h. 2x^2 - 8x - 14
i. 6x^2 + 36x - 30

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext

Jason went to an arcade to play video games. he paid $2 for every 11 tokens he bought. he spent a total of $16 on tokens. which equation can be used to determine,t, the number lf tokens jason bought

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?