2 years ago

Find the roots of this equation 7xsquare - 5x - 2 = 0

Mathematics

1 answer:

Sophie [7]2 years ago

7 0

Answer:

x = 1, -2/7

Step-by-step explanation:

You could use the quadratic equation but this can be factored into

(7x + 2) (x - 1). You can verify that by multiplying it out.

Since (7x + 2) (x - 1) = 0, if either factor is 0 then the equation would be equal to 0, thus we get x = 1, -2/7

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Step 1: Convert words into an expression

52 minus 4 times the difference of 13 and 7.

(52 - 4) * (13 - 7)

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