Question

5. Factorize: 25y2 + 70yz + 49z2
(1) (25y + 492)
(2) (5y + 722
(3) (5y - 722
(4) (5y = 72) (5y - 7)​

Answer 1

Answer:

Mechanical Edit

The most basic form of mechanical motion detection is in the form of a switch or trigger. For example, the keys of a typewriter employ a mechanical method of detecting motion. Each key is a manual switch that is either off or on. Each letter that appears is a result of motion on that corresponding key and the switch being turned on.

Electronic Edit

See also: Motion estimation and Moving object detection

The principal methods by which motion can be electronically identified are optical detection and acoustic detection. Infrared light or laser technology may be used for optical detection. Motion detection devices, such as PIR motion detectors, have a sensor that detects a disturbance in the infrared spectrum. Once detected, a signal can activate an

Step-by-step explanation:

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Answer 2

Answer:

$25 {y}^{2} + 70yz + 49 {z}^{2} \\ {(5y)}^{2} + 2 \times 5y \times 7z + {(7z)}^{2} \\ (5y + 7z) {}^{2}$

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