Question

Find the value of the polynomial 5x2 - 3x + 7 at (a) x = 1 and (b) y = -1.​

Answer 1

Answer:

${} \red \{5 {x}^{2} - 3x + 7 \: \\ x = 1 \\ y = - 1 \\ 5 - 3 + 7 = 9$