State whether the following statements are true or false. If false, support your answer with reasons. a) (a + 1)(a - 1)(a + 1) can be simplified to (a* – 1). (5 x 1 = 5 mark. b) A cube of side 2 cm is cut into equal cubes of side 1 cm. The total surface area of the cubes that are cut out is 192 cm2. c) If x varies inversely to the reciprocal of y, the product of x and y is a constant. d) The expression ax2 + by2 + bx2 + ay can be factorised as (x2 + y2)(x + y). e) The value of (x + a)(x + b) is x? + abx + (a + b).
Answers
Answered by
0
Step-by-step explanation:
State whether the following statements are true or false. If false, support your answer with reasons. a) (a + 1)(a - 1)(a + 1) can be simplified to (a* – 1). (5 x 1 = 5 mark. b) A cube of side 2 cm is cut into equal cubes of side 1 cm. The total surface area of the cubes that are cut out is 192 cm2. c) If x varies inversely to the reciprocal of y, the product of x and y is a constant. d) The expression ax2 + by2 + bx2 + ay can be factorised as (x2 + y2)(x + y). e) The value of (x + a)(x + b) is x? + abx + (a + b).
Similar questions