Question

(y-7)×(y+3)+(y-1)×(y+5)=94​

Answer 1

Вот ответ, решил методом извлечение квадратного корня

Answer 2

To solve the given equation, let's simplify the expression first:

(y - 7)(y + 3) + (y - 1)(y + 5) = 94

Expanding the terms:

(y^2 - 4y - 21) + (y^2 + 4y - 5) = 94

Combine like terms:

y^2 + y^2 - 4y + 4y - 21 - 5 = 94

Simplifying further:

2y^2 - 26 = 94

Rearranging the equation:

2y^2 = 94 + 26

2y^2 = 120

Divide both sides by 2:

y^2 = 60

Taking the square root of both sides:

y = ±√60

Therefore, the solutions for y are:

y = √60 (approximately 7.746)

or

y = -√60 (approximately -7.746)