Question

y square + 7 Y - 144​

Answer 1

Answer:

I did not understand the question

Answer 2

Answer: 9,-16

Step-by-step explanation:

f(y) = y² + 7y - 144

To find the roots i.e f(y) = 0

Method 1

y = [ -b +/- Root (b² - 4ac) ] / 2a

Here a = 1 b = 7 c = -114

On substituting we get y = -16,9

Method 2

y² + 7y - 144= 0

y² + 16y - 9y - 144 = 0

y(y + 16) -9(y + 16) = 0

(y-9)(y+16)=0

y -9 = 0 and y + 16 = 0

y = 9, -16