Help Please For My Math
Help please for my math 1. x³+5x-19 Subtitute x=3 3³+(3)5-19 27+15-19 =23 2. x²+xy+y² Substitute ,x=2,y=3 (2)²+(2)(3)+(3)² 4+6+9 =19 3.x²+xy²+4y Substitute x=4,y=6 (4)²+(4)(6)²+4(6) 16+144+24 =184 4.(2)²+2(2)(4)+3(4)²(6)+(6)² 4+16+288+36 =344 5. 5³+(5²)(7)+5(7²)(1)+(7³)(1²)+1³ =889