1.Transform the quadratic equation x(x+5)=0 in standard form.

A. x²-5x=0 B. x²+5x =0 C.x²=5x³

2.What are the roots of x(x+3)+3=0?

A.2 ans 1 B.-3 and 1 C.-2 and - 1

3.Solve the quadratic equation x²+12x+20=0.

A.2 and 10 B.-2 and -10
C. 5 and 6

4.Find the two consecutive positive numbers whose product is 90.

A.2 and 45 B.3 and 39
C. 9 and 10

5.The area of rectangle is 7cmlonger than its with its area is 78cm²,find the length and width of the rectangle.

A. 39cm by 2cm
B. 13cm by 6 cm
C. 3cm by 26cm

6.Give the mathematical expression of "twice the sum of x and y",

A.2x+y B.2(x+y) C.(x+y)

7.The product of two consecutive evwn positive numbers is 48. Find the two numbers.

A.6 and 8 B.4 and 12 C.7 and 9​