Complete the square to transform the expression x^2+4x 2 into the form a(x − h)2 + k.

Step-by-step explanation:

we have the expression

Convert to vertex form

where

a is the leading coefficient

(h,k) is the vertex

Complete the square

Rewrite as perfect squares

so

The coefficient a =1

The vertex is the point (-2,-2)

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5