What are the solutions to this quadratic equation? -2x2+x+4=0

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?