What are the solutions to the equation (9y-14)(9y+14)-60=0 ?

The solutions to the equation (9y-14)(9y+14)-60=0 are y= 16/9 ,y=-16/9

Find the zeros of (9y-14)(9y+14)-60=0

The zeros of (9y-14)(9y+14)-60=0 are y= 16/9 ,y=-16/9

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(9 y - 14) (9 y + 14) - 60 = 0

y = \frac{16}{9}, y = - \frac{16}{9}

Decimal Notation

y = 1.77777 \dots, y = - 1.77777 \dots

Solution steps

(9 y - 14) (9 y + 14) - 60 = 0

Expand

(9 y - 14) (9 y + 14) - 60 : 81 y^{2} - 256

81 y^{2} - 256 = 0

Solve with the quadratic formula

y_{1, 2} = \frac{- 0 \pm 0 ^{2} - 4 \cdot 81 ( - 256 )}{2 \cdot 81}

0^{2} - 4 \cdot 81 (- 256) = 288

y_{1, 2} = \frac{- 0 \pm 288}{2 \cdot 81}

Separate the solutions

y_{1} = \frac{- 0 + 288}{2 \cdot 81}, y_{2} = \frac{- 0 - 288}{2 \cdot 81}

y = \frac{- 0 + 288}{2 \cdot 81} : \frac{16}{9}

y = \frac{- 0 - 288}{2 \cdot 81} : - \frac{16}{9}

The solutions to the quadratic equation are:

y = \frac{16}{9}, y = - \frac{16}{9}

lo g_{5} (\frac{1}{25}) = - 2

0.1 m - 1.3 m = - 2.1 - 2.7

6 a = 9 a

9 = 2 y + 5

(- 4) (- \frac{5}{16}) (- 2)

What are the solutions to the equation (9y-14)(9y+14)-60=0 ?
The solutions to the equation (9y-14)(9y+14)-60=0 are y= 16/9 ,y=-16/9
Find the zeros of (9y-14)(9y+14)-60=0
The zeros of (9y-14)(9y+14)-60=0 are y= 16/9 ,y=-16/9