Write an expression that represents the sum of 7 and x

How are sas and sss used to show that two triangles are congruent?

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

3questions show how you solved the problem 1. subtract & simplify (–y2 – 4y – 8) – (–4y2 – 6y + 3) 2.multiply and simplify 2x2y3z2 · 4xy4x2 3.multiply and simplify (x – 4) (x2 – 5x – 6)