Calculate the value of the expression: 1/2(14)(5)

35

step-by-step explanation:

1/2 x 14 x 5=

70/2=

35

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!