You need to add the two quadratics together...
x^2+11x-6+6x^2-3x+9
7x^2+8x+3
All you have to use is pemdas and keep y by itself
Answer:
I dont understand that sorry
Answer:
not sure how to really answer this question.
Given:
ABC is an isosceles triangle in which AC =BC.
D and E are points on BC and AC such that CE=CD.
To prove:
Triangle ACD and BCE are congruent.
Solution:
In triangle ACD and BCE,
(Given)

(Common angle)
(Given)

In triangles ACD and BCE two corresponding sides and one included angle are congruent. So, the triangles are congruent by SAS congruence postulate.
(SAS congruence postulate)
Hence proved.