Question

please answer the encircled ones​

Answer 1

Answer:

3. (d) x² + 2x - 15

4. (b) (6² + 7 - 3)

5. (c) (² + 8 + 16)

6. (d) (² - 12 + 36)

7. (b) (4² - 25)

10. (a) ( - 2)

Step-by-step explanation:

3.

(x + 5)(x-3) becomes:

(x + 5)(x-3) becomes:(x × x) - (x × 3) + (5 × x) - (5x3)

x² - 3x + 5x - 15

We can now combine like terms:

We can now combine like terms:x² + ( -3+5)x - 15

3+5)x - 15x² + 2x - 15

4.

(2+3)(3−1)

(2+3)(3−1)2(3−1)+3(3−1)

(6² + 7 - 3)

5.

(+4)(+4)

(+4)(+4)(+4)+4(+4)

(² + 8 + 16)

6.

(−6)(−6)

(−6)(−6)(−6)−6(−6)

(² - 12 + 36)

7.

(2+5)(2−5)

2(2−5)+5(2−5)

(4² - 25)

10.

(−4+4)+(−2)

(−4+4)+(−2)(−3+4)+(−2)

(-2 + 2)

( - 2)

Hope this helps you

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