x = 7
step-by-step explanation:
equating the expression for area to the given area
2x² - 7x - 4 = 45 ( subtract 45 from both sides )
2x² - 7x - 49 = 0 ← in standard form
to factor consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term
product = 2 × - 49 = - 98 and sum = - 7
the factors are - 14 and + 7
use these factors to split the middle term
2x² - 14x + 7x - 49 = 0 ( factor the first/second and third/fourth terms )
2x(x - 7) + 7(x - 7) = 0 ← factor out (x - 7)
(x - 7)(2x + 7) = 0
equate each factor to zero and solve for x
x - 7 = 0 ⇒ x = 7
2x + 7 = 0 ⇒ 2x = - 7 ⇒ x = -
thus the positive value for x is x = 7
The band Fallout boy supposed to be on hiatus for three years, and they will be back soon after their hiatus of three years is over.
Explanation:
The American rock band named 'Fall Out Boy' was on a three year long hiatus before 2013 due to some internal reasons. The band had performed several shows for a period of over 10 years before going on hiatus. Patrick Stump is the lead vocalist of the band.