Which correctly completes this number sentence?

3 × 9 = (3 × 5) +

a)(5 × 9)

b)(3 × 4)

c)18

d)(9 - 5)

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()