What is 2x squared + 2x - 12 = 0

x = -3   x = 2

Step-by-step explanation:

First divide every term by 2.

/2       /2     /2     /2

It now simplifies to...

Now you have to find 2 values that multiply to -6 and add to 1.

These numbers are 3 and -2

(x + 3)(x - 2) = 0

Now make a T-chart or separate both terms and equal them to 0 and solve.

x + 3 = 0                     x - 2 = 0

x = -3                           x = 2

Plug both values in the original equation one at a time and check if the equation equals zero.

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

answ5

step-by-step explanation:

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