Answer:
Step-by-step explanation:
To find the value of x in -x^2+7x+5=0
Multiply through by -1
x^2-7x-5=0
Usinng formulate method
We get
-b+or-√b^2-4ac over 2a
7+ or -√-7^2-4×1×-5 over 2×1
7+ or -√49+20/2
7+or -√69/2
7+8.3/2 or 7-8.3/2
7.7 or -0.65
