math 8

(x)(x)=

• x^3
• x^2
• 2x
• x+1

(2x)(-3x)=

• -9x^2
• -7x^2
• -6x^2
• -5x^2

(x -8)^2 =?

• x^2 - 8x + 64
• x^2 - 16x - 64
• x^2 - 16x + 64
• x^2 - 8x - 64

(a + b + c)^2 =?

• a^2 + b^2 + c^2 - 2ab - 2ac - 2bc
• a^2 + b^2 + c^2 + ab + ac + bc
• a^2 + b^2 + c^2 - ab - ac - bc
• a^2 + b^2 + c^2 + 2ab + 2ac + 2bc

what is the value of (x - 4) (x + 4)?

• x^2 - 16
• x^2 - 2
• x^2 + 16
• x^2 - 8

(e + 2a + q)2 =?

• e2 + 4ae + 4a2 + 2q(e + a) - q2
• e2 + 4ae + 4a2 + 2q(e - a) + q2
• e2 + 4ae + 4a2 - 2q(e + a) + q2
• e2 + 4ae + 4a2 + 2q(e + a) + q2

(3v + 6k)2 =?

• 9v^2 + 36vk - 36k^2
• 9v^2 + 36vk + 36k^2
• 9v^2 - 36vk + 36k^2
• 3v^2 + 6vk + 6k^2

(5)(5)(5)(5)=?

• 125
• 625
• 725
• 525

(3m + 4n - o)2=?

• 9m^2 + 24mn + 16n^2 - 6mo - 8no + o^2
• 9m^2 + 24mn + 16n^2 - 6mo - 8no + o^3
• 9m^2 + 24mn + 16n^2 - 6mo - 8no + o
• 9m^2 + 24mn + 16n^2 - 6mo - 8no

(5m)2=?

• 25m^2
• 15m^2
• 10m^2
• 20m^2