Are the expressions -0.5(3×+5) and -1.5× + 2.5 equivalent? Explaine why or why not, plss help this is for my grades

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Ответ:

david2154

15.03.2022

Mathematics

ANSWER

$x = - 7 \: or \: x = 5$

EXPLANATION

The given function is

$f(x) = {x}^{2} + 2x - 35$

To find the zeros, we equate the function to zero.

${x}^{2} + 2x - 35 = 0$

Split the middle term to obtain,

${x}^{2} + 7x - 5x- 35 = 0$

Factor by grouping:

{x}(x + 7) - 5(x + 7)= 0

(x + 7)(x - 5) = 0

$(x + 7) = 0 \: or \: (x - 5) = 0$

$x = - 7 \: or \: x = 5$

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