asked 70.9k views
1 vote
5x+y=2x2+6, y+4x=7x-2
solve by using substitution method

1 Answer

0 votes

Answer:

2x^2+3x+8=0. solve the problem by using the quadratic formula

Explanation:

From the first equation, we can rewrite it as y = 2x^2 + 6 - 5x.

Now we substitute this expression for y in the second equation:

(2x^2 + 6 - 5x) + 4x = 7x - 2.

Simplifying, we get 2x^2 + 10x + 6 = 7x - 2.

Rearranging, we have 2x^2 + 3x + 8 = 0.

Unfortunately, this equation doesn't factor easily. We can use the quadratic formula to find the solutions for x.

answered
User Tom Marthenal
by
8.2k points

No related questions found

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.

Categories