Question

6. b) Știind că y =9, determinați produsul p = (y + 5). (2y - 4). (3y + 3).
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Answer 1

Răspuns: $\purple{\underline{\bf p = 5~880}}$

Explicație pas cu pas:

$\bf y = 9$

$\bf p = (y +5)\cdot (2y-4)\cdot (3y+3)$

$\bf p = (9 +5)\cdot (2\cdot 9-4)\cdot (3\cdot 9+3)$

$\bf p = 14\cdot (18-4)\cdot (27+3)$

$\bf p = 14\cdot 14\cdot 30$

$\bf p = 196\cdot 30$

$\purple{\boxed{\bf ~p = 5~880~}}$

Answer 2

Răspuns:

$p = (y + 5)(2y -4)(3y + 3) \\ p = (9 + 5)(2 \times 9 - 4)(3 \times 9 + 3) \\ = 14 \times 14 \times 30 =5880$