Hello : 2x²+4x-5 = a(x-h)2+k =a(x²-2xh+h²)+k 2x²+4x-5 = ax²-2ahx +ah² +k a=2(1) -2ah = 4(2) ah²+k=-5...(3) in (2) : -4h=4 h=-1 in(3) : 2(-1)²+k=-5 k = -7 conclusion : 2x²+4x-5 = 2(x+1)²-7 the vertex is : A(-1,-7)
angie7665
5,0(64 marks)
Sample Response: Henry will need a total of 15 pints of paint. The 3 pints of yellow were multiplied by 3 to get 9 total, so 2 pints of red would be multiplied by 3 to get 6 total.